SUPPORT US. Covid-19 has significantly affected our fundraising. Please help!
登录注册
主页关于 MindatMindat手册Mindat的历史版权Who We Are联系我们于 Mindat.org刊登广告
捐赠给 MindatCorporate Sponsorship赞助板页已赞助的板页在 Mindat刊登 广告的广告商于 Mindat.org刊登广告
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe Elements书籍及杂志
搜索矿物的性质搜索矿物的化学Advanced Locality Search随意显示任何一 种矿物Random Locality使用minID搜索邻近产地Search Articles搜索词汇表更多搜索选项
搜索:
矿物名称:
地区产地名称:
关键字:
 
Mindat手册添加新照片Rate Photos产区编辑报告Coordinate Completion Report添加词汇表项目
Mining Companies统计会员列表Mineral Museums矿物展及活动The Mindat目录表设备设置
照片搜索Photo Galleries今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集Mineral Photography

Devon and Cornwall metalliferous mining district, England, UKi
Regional Level Types
Devon and Cornwall metalliferous mining districtMining District
EnglandConstituent Country
UKCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Locality type:
Largest Settlements:
PlacePopulation
Plymouth260,203 (2017)
Exeter117,763 (2017)
Torquay65,388 (2017)
Paignton49,886 (2011)
Redruth42,690 (2017)
Newton Abbot36,474 (2018)


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities
 No mineral species recorded.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Acanthite
Formula: Ag2S
Localities: Reported from at least 20 localities in this region.
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Greg, R.P., and Lettsom, W.G. (1858): Manual of the Mineralogy of Great Britain and Ireland. John van Voorst (London), p. 242; Hall, T.M. (1868): Edward Stanford (London), 168 pp.; Collins, J.H. (1871): A Handbook to the Mineralogy of Cornwall and Devon. D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Localities: Reported from at least 41 localities in this region.
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Adamite ?
Formula: Zn2(AsO4)(OH)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Aerugite
Formula: Ni8.5(AsO4)2As5+O8
Description: Now considered as one of several occurrences that were falsified by Kingsbury.
Reference: Davis, R.J., Hey, M.H., and Kingsbury, A.W.G. (1965) Xanthiosite and aerugite. Mineralogical Magazine, vol. 35, n° 269, p. 72-83.; Embrey, P.G. (1978) Fourth supplementary list of British Minerals. Mineralogical Magazine, vol. 42, n° 322, p. 169-177. (referring to Kingsbury)
'Agalmatolite'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
'Agardite'
Agardite-(Ce)
Formula: CeCu6(AsO4)3(OH)6 · 3H2O
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Agardite-(La)
Formula: LaCu6(AsO4)3(OH)6 · 3H2O
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
Agardite-(Nd)
Formula: NdCu6(AsO4)3(OH)6 · 3H2O
Description: Pale-green fibres, resembling aurichalcite and giving the powder-pattern of mixite (q.v.), on mimetite in quartz on old specimens in the BM(NH).
Reference: Embrey, P.G. (1978) Fourth supplementary list of British Minerals. Mineralogical Magazine, vol. 42, n° 322, p. 169-177.; Embrey & Symes (1987) Minerals of Cornwall and Devon.
Agardite-(Y)
Formula: YCu6(AsO4)3(OH)6 · 3H2O
Reference: Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
Aheylite ?
Formula: (Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Aikinite
Formula: PbCuBiS3
Reference: UKJMM Vol.25 p.19; UKJMM Vol.29 p.49-52
Ajoite ?
Formula: (K,Na)Cu7AlSi9O24(OH)6 · 3H2O
Reference: https://www.mindat.org/mesg-7-61822.html
Akaganeite
Formula: (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
Reference: Ryback, G., and Tandy, P.C. (1992): Mineralogical Magazine 56, 261-275; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Alabandite
Formula: MnS
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Albite
Formula: Na(AlSi3O8)
Localities: Reported from at least 27 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Albite var:
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: Russell, A. (1910): Mineralogical Magazine 15, 377-384
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Reference: UKJMM Vol.29 p.49-52
Alloclasite
Formula: Co1-xFexAsS
Reference: [Embrey & Symes, 1987, 39 - "Minerals of Cornwall and Devon"]
Allophane
Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Localities: Reported from at least 14 localities in this region.
Reference: Royal Cornwall Polytechnic Society (1870): 38. Annual Report, pp. 30-31; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Alluaudite
Formula: (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3
Reference: No reference listed
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358
Aluminite
Formula: Al2(SO4)(OH)4 · 7H2O
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
Aluminocopiapite
Formula: Al2/3Fe3+4(SO4)6(OH)2 · 20H2O
Reference: Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Alumotungstite'
Formula: 2W2O6(H2O)
Reference: Bernard & Hyrsl (2004) Minerals and their Localities. (Granit, Prague); Steve Rust, Richard de Nul, and Gunnar Färber specimens.
'Alunite Group'
Reference: S. Rust Collection.
Alunogen
Formula: Al2(SO4)3 · 17H2O
Reference: [British Museum (NH) specimen BM1915,186]; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Amblygonite
Formula: LiAl(PO4)F
Reference: C. S. Exley and M. Stone (1964) Present views of some aspects of the geology of Cornwall and Devon (Royal Geological Society Cornwall), pp. 144-5. Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177. Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications.
'Amblygonite-Montebrasite Series'
Reference: von Knorring, O., and Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, vol. 48, n° 348, 443-448.
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Localities: Reported from at least 6 localities in this region.
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128
'Amphibole Supergroup var: '
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128
Analcime ?
Formula: Na(AlSi2O6) · H2O
Description: According to Collins (1892), analcime is "said to have been found in cavities of the cliffs near Botallack". He also notes, however, that he has never seen a Cornish specimen.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Anatase
Formula: TiO2
Localities: Reported from at least 59 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007): Lapis 32(11), 13-25
Andalusite
Formula: Al2(SiO4)O
Localities: Reported from at least 12 localities in this region.
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 476-477; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Andalusite var:
Formula: Al2(SiO4)O
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 282-284.
Andersonite
Formula: Na2Ca(UO2)(CO3)3 · 6H2O
Reference: Elton, N.J. and Hooper, J.J. (1992): Mineralogical Magazine, 56(1), 124-125.
Andradite
Formula: Ca3Fe3+2(SiO4)3
Localities: Reported from at least 7 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Andradite var:
Formula: Ca3Fe3+2(SiO4)3-x(OH)4x
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
'Andrewsite'
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 591-594
Anglesite
Formula: PbSO4
Localities: Reported from at least 32 localities in this region.
Reference: Richard de Nul collection
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Localities: Reported from at least 25 localities in this region.
Reference: [Golley & Williams, 1995, 4 - "Cornish Mineral Reference Manual"]
Annabergite
Formula: Ni3(AsO4)2 · 8H2O
Localities: Reported from at least 8 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Reference: Van King
Anorthite
Formula: Ca(Al2Si2O8)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Anthophyllite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Antigorite
Formula: Mg3(Si2O5)(OH)4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Antimony
Formula: Sb
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Antlerite
Formula: Cu3(SO4)(OH)4
Reference: Ansermet, S. (2007): Lapis 32(2), 25-26, 50
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Localities: Reported from at least 55 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
'Apatite var: '
Reference: Proudfoot, V.B. (1958): Mineralogical Magazine 31, 344-345; Braithwaite, R.S.W., and Cooper, B.V. (1982): Mineralogical Magazine 46, 119-126
'Apatite Group' ?
Description: Originally recorded from the A.W.G. Kingsbury Collection, however given the discreditation of other Kingsbury specimens, apatite is considered unconfirmed.
Reference: No reference listed
'Apophyllite'
Reference: Russell, A. (1910): Mineralogical Magazine 15, 377-384
Aragonite
Formula: CaCO3
Localities: Reported from at least 42 localities in this region.
Reference: Richard de Nul collection
Aragonite var:
Formula: CaCO3
Reference: Tony Aldworth specimen
'Argentine'
Formula: CaCO3
Reference: Specimen in the Philadelphia Academy of Natural Sciences collection.
Argentojarosite
Formula: AgFe3+3(SO4)2(OH)6
Reference: Handbook of Mineralogy
Arsenic
Formula: As
Localities: Reported from at least 11 localities in this region.
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 282-284.
Arseniosiderite
Formula: Ca2Fe3+3(AsO4)3O2 · 3H2O
Reference: Kingsbury, A.W.G. and Hartley, J. (1957) New occurrences of arseniosiderite. Mineralogical Magazine, vol. 31, n° 237, 499-500.; Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV.
Arsenogorceixite
Formula: BaAl3(AsO4)(AsO3OH)(OH)6
Arsenogoyazite
Formula: SrAl3(AsO4)(AsO3OH)(OH)6
Reference: Lapis 33 (2), 2008, p. 39
Arsenolite
Formula: As2O3
Localities: Reported from at least 12 localities in this region.
Reference: Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 24; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Arsenopyrite
Formula: FeAsS
Localities: Reported from at least 246 localities in this region.
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, p. 431.
Arthurite (TL)
Formula: CuFe3+2(AsO4)2(OH)2 · 4H2O
Description: Thin apple-green crusts, alone or with pharmacosiderite or a hidalgoite-like mineral or both, on quartzose matrix
Reference: Davis, R.J., and Hey, M.H. (1964): Mineralogical Magazine 33, 937-941 Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177
'Asbestos'
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358
'Asbestos var: '
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358
Asbolane
Formula: (Ni,Co)2-xMn4+(O,OH)4 · nH2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Atacamite
Formula: Cu2(OH)3Cl
Localities: Reported from at least 13 localities in this region.
Reference: Ansermet, S. (2007): Lapis 32(2), 25-26, 50
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Localities: Reported from at least 7 localities in this region.
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 282-284.
Auriacusite
Formula: Fe3+Cu2+(AsO4)O
Description: Dark brown acute crystals, also spindle-like prismatic zoned crystals (dark brown cores, pale browns rims).
Reference: Stuart Mills (Museum Victoria) & Nicolas Meisser (Lausanne); Weiß, S., Merry, M. & Ansermet, S. (2017): Neufunde aus Cornwall: Cannonit, Arthurit, Auriacusit. Lapis, 42 (1), 20-23; 62 (in German).
Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Autunite
Formula: Ca(UO2)2(PO4)2 · 11H2O
Localities: Reported from at least 19 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
'Autunite Group'
Formula: A(UO2)2(XO4)2·10-12H2O
Reference: S.Rust collection.
Axinite-(Fe)
Formula: Ca2Fe2+Al2BSi4O15OH
Localities: Reported from at least 10 localities in this region.
Description: The reference reports "axinite", but Cornish axinites have been shown to be axinite-(Fe)
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp
'Axinite Group'
Localities: Reported from at least 33 localities in this region.
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Azurite
Formula: Cu3(CO3)2(OH)2
Localities: Reported from at least 40 localities in this region.
Reference: Collection Richard De Nul
Barbosalite
Formula: Fe2+Fe3+2(PO4)2(OH)2
Reference: [Elton, N. J. (1998): Barbosalite, frondelite and other phosphates from Gunheath China Clay Pit, St Austell, Cornwall, England. Journal of the Russell Society 7, 15-18.
Barstowite (TL)
Formula: Pb4Cl6(CO3) · H2O
Type Locality:
Reference: Keller, P. and Lloyd, D. (1991) Barstowite, 3PbCb.PbC03.H20, a new mineral from Bounds Cliff, St. Endellion, Cornwall. Mineralogical Magazine: 55: 121-125.; Kutzke, H., Klapper, H., Merlino, S., Pasero, M., Perchiazzi, N., and Eggert, G. (2000) The crystal structure of barstowite, Pb4Cl6(CO3)•H2O, determined on crystals from Etruscan slags and from a Late-Hellenistic shipwreck. Zeits. Kristallogr., 215, 110-113.
Baryte
Formula: BaSO4
Localities: Reported from at least 29 localities in this region.
Reference: [Embrey & Symes, 1987, 51 - "Minerals of Cornwall and Devon"]
Bassetite (TL)
Formula: Fe2+(UO2)2(PO4)2 · 10H2O
Reference: Mineralogical Magazine (1915): 17: 221; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 995.; Mineralogical Magazine 1989 53 : 473-478
Bavenite
Formula: Ca4Be2Al2Si9O26(OH)2
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
Bayldonite (TL)
Formula: PbCu3(AsO4)2(OH)2
Localities: Reported from at least 6 localities in this region.
Description: There is some dispute about Penberthy Croft being the type Locality for Bayldonite, specimens may have come from Wheal Carpenter used for Church's analysis. Specimens were once in Richard Talling (mineral dealer) possession with just the location Cornwall before being passed to Church.
Reference: Sumin De Portilla, V., Portilla Quevedo, M., and Stepanov, V.I. (1981) The structure of bayldonite: chemical analysis, differential thermal analysis, and IR spectroscopy. American Mineralogist, 66, 148-153.; Cooper, M.P. and Stanley, C.J. (1990) Minerals of the English Lake District: Caldbeck Fells. Natural History Museum Publications, London, 160 pp.; Camm, G.S. and Merry, M. (1991) Bayldonite & its associates from Penberthy Croft, Cornwall. U.K. Journal of Mines and Minerals, 9, 6-15. ; Golley, P. and Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications, Truro, Cornwall.
Beaverite-(Cu)
Formula: Pb(Fe3+2Cu)(SO4)2(OH)6
Reference: Braithwaite, R.S.W., and Cooper, B.V. (1982): Mineralogical Magazine 46, 119-126
Bechererite
Formula: Zn7Cu(OH)13[(SiO(OH)3(SO4)]
Reference: Bechererite from Leadhills, South Lanarkshire and the Charlotte United Mines, Perranuthnoe, Cornwall. UK Journal of Mines & Minerals pp7-8, No28, 2007.
Becquerelite
Formula: Ca(UO2)6O4(OH)6 · 8H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Bementite
Formula: Mn7Si6O15(OH)8
Reference: No reference listed
Beraunite
Formula: Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Berthierite
Formula: FeSb2S4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Bertrandite
Formula: Be4(Si2O7)(OH)2
Localities: Reported from at least 12 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Beryl
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 14 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Beryllonite
Formula: NaBePO4
Description: Kingsbury, A.W.G. (1964) in Mineralogical Magazine 35, lviii states: "Colourless isolated crystals (2cm) from a pegmatite vein in the old aplite quarry at Meldon, Okehampton, Devon". However, von Knorring, O. and Condliffe, E. (1984): On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine 48, 443-448, states "Beryllonite occurs in whitish grains some 2 mm across and is mostly enclosed in elbaite with some lepidolite and quartz. It is fibrous and silky in appearance and is closely associated with pollucite, orthoclase, petalite, and lepidolite." 2cm vs. 2mm...
Reference: Kingsbury, A.W.G. (1964) Mineralogical Magazine 35, lvii.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, 42(322), 169-177 (referring to Kingsbury).; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine 48, 443-448 (referring to Kingsbury).; http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi; http://www.handbookofmineralogy.org/pdfs/beryllonite.pdf
Bettertonite (TL)
Formula: [Al6(AsO4)3(OH)9(H2O)5]·11H2O
Type Locality:
Description: It occurs as tufts of white, ultrathin (sub-micrometre) rectangular laths, with lateral dimensions generally <20 μm. The laths are flattened on {010} and exhibit the forms {010}, {100} and {001}. The mineral is associated closely with arsenopyrite, chamosite, liskeardite, pharmacoalumite, pharmacosiderite and quartz. Bettertonite is translucent with a white streak and a vitreous to pearly, somewhat silky lustre.[[1]]
Reference: Grey, I.E., Kampf, A.R., Price, J.R., MacRae, C.M. (2015) Bettertonite, IMA 2014-074. CNMNC Newsletter No. 23, February 2015, page 55. Williams, P.A., Hatert, F., Pasero, M., Mills, S.J. (2015) New minerals and nomenclature modifications approved in 2014 and 2015. Mineralogical Magazine, 79:1, 51-58. [[1]] Grey, I.E., Kampf, A.R., Price, J.R., Macrae, C.M. (2015) Bettertonite, [Al₆(AsO₄)₃(OH)₉ (H₂O)₅ ]·11H₂O, a new mineral from the Penberthy Croft mine, St. Hilary, Cornwall, UK, with a structure based on polyoxometalate clusters. Mineralogical Magazine, 79:7, 1849-1858.
Beudantite
Formula: PbFe3(AsO4)(SO4)(OH)6
Localities: Reported from at least 15 localities in this region.
Reference: Weiss, S., Green, D.H., Hooper, J.J. & Elton, N. (2007): Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. LAPIS 32 (11), 13-25
'Beudantite Group'
Formula: AM3(XO4)(SO4)(OH)6
Reference: S. Rust Collection
Bieberite
Formula: CoSO4 · 7H2O
Description: Kingsbury Collection at the NHM. Showed to be fraudulent. See http://www.mindat.org/mesg-104-355275.html
Reference: Golley, P., Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications, Truro, Cornwall.
'Bindheimite'
Formula: Pb2Sb2O6O
Localities: Reported from at least 11 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Localities: Reported from at least 12 localities in this region.
Reference: BMS Database; UK Journal of Mines and Minerals, No. 14 p32
Birnessite
Formula: (Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Description: According to Betterton (1989) "Birnessite has been identified by X-ray diffraction methods at the British Museum (Natural History),(X-ray number 6713F) on specimens submitted in 1987 from the Penberthy Croft Mine, St Hilary, Cornwall [SW 558 324]. The mineral occurs here in weathered blocks of partially-cemented slate-rich veinstone below the surface of an old dump. It forms black glossy coatings up to 2 mm thick on massive quartz, botryoidal woodwardite (6712F), earthy goethite, and dolomite with brochantite crystals (6711F), connellite (7407F), wroewolfeite (6710F), and chalcopyrite."
Reference: Betterton, J. (1989) Birnessite from Penberthy Croft Mine, Cornwall - a Second English Occurrence. Journal of the Russell Society, 2:2, 48. Golley, P., Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications, Truro, Cornwall.
Bismite
Formula: Bi2O3
Localities: Reported from at least 7 localities in this region.
Reference: Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Bismoclite
Formula: BiOCl
Habit: Massive, pseudomorphs
Colour: Creamy
Reference: [UKJMM 17 (1996) p.17]
Bismuth
Formula: Bi
Localities: Reported from at least 31 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Bismuthinite
Formula: Bi2S3
Localities: Reported from at least 46 localities in this region.
Reference: Lapis 11(2), 34-38 (1986)
'Bismuth Ochre'
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Bismutite
Formula: (BiO)2CO3
Localities: Reported from at least 14 localities in this region.
Description: Originally thought to be eulytine, however Clark et al. proved it to be bismutite.
Reference: Hogg, T. (1825) A Manual of Mineralogy. Polyblank Publishers (London), p. 25; Collins, J.H. (1892) A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Clark, A.M., Couper, A.G., Embrey, P.G., and Fejer, E.E. (1986) Mineralogical Magazine 50, 731-733.; Braithwaite, R.S.W. and Knight, J.R. (1990) Rare Minerals, Including Several New to Britain, in Supergene Alteration of U-Cu-As-Bi-Co Mineralisation Near Dalbeattie, South Scotland. Mineralogical Magazine, vol. 54, n° 374: 129-131. (referring to Clark, et al.)
Bismutoferrite
Formula: Fe3+2Bi(SiO4)2(OH)
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Weiss, S., Green, D.H., Hooper, J.J., Elton, N. (2007): Lapis 32(11), 13-25
'Bitumen'
Localities: Reported from at least 13 localities in this region.
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386
Boleite
Formula: KPb26Ag9Cu24(OH)48Cl62
Localities: Reported from at least 7 localities in this region.
Reference: Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 72
Boltwoodite
Formula: (K,Na)(UO2)(SiO3OH) · 1.5H2O
Reference: [Journal of the Russell Society, 6(1), 17-26 (1995)]
Bornite
Formula: Cu5FeS4
Localities: Reported from at least 59 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Botallackite (TL)
Formula: Cu2(OH)3Cl
Localities: Reported from at least 14 localities in this region.
Reference: J.Chem.Soc. London (1865) ser. 2, vol. 3, 212-214
Boulangerite
Formula: Pb5Sb4S11
Localities: Reported from at least 13 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Bournonite (TL)
Formula: PbCuSbS3
Localities: Reported from at least 19 localities in this region.
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128; Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, p. 577; Embrey, P.G., and Symes, R.F. (1987): Minerals of Cornwall and Devon. British Museum of Natural History (London), 154 pp.
Brandtite ?
Formula: Ca2Mn2+(AsO4)2 · 2H2O
Description: Fraudulent Kingsbury locality.
'Bravoite'
Formula: (Fe,Ni)S2
Reference: Rick Turner, personal communication
Brochantite
Formula: Cu4(SO4)(OH)6
Localities: Reported from at least 56 localities in this region.
Reference: Collection Richard De Nul
Brookite
Formula: TiO2
Localities: Reported from at least 11 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007): Lapis 32(11), 13-25
Brushite
Formula: Ca(HPO4) · 2H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Bulachite
Formula: Al2(AsO4)(OH)3 · 3H2O
Reference: http://collections.museumvictoria.com.au/object.php?irn=37102; Grey, I.E., Betterton, J., Kampf, A.R., Macrae, C.M., Shanks, F.L., Price, J.R. (2016) Penberthycroftite, [Al₆(AsO₄)₃(OH)₉ (H₂O)₅ ]·8H₂O, a second new hydrated aluminium arsenate mineral from the Penberthy Croft mine, St. Hilary, Cornwall, UK. Mineralogical Magazine, 80:7, 1149-1160.
Bustamite
Formula: CaMn2+(Si2O6)
Reference: Dale Foster Collection
Buttgenbachite
Formula: Cu19(NO3)2(OH)32Cl4 · 2H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Localities: Reported from at least 8 localities in this region.
Reference: Lapis 11(2), 34-38 (1986); Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Calamine'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Calcite
Formula: CaCO3
Localities: Reported from at least 91 localities in this region.
Reference: Tony Aldworth Collection
Calcite var:
Formula: (Ca,Mn)CO3
Reference: Russell, A. (1946). On rhodonite and tephroite from Treburland manganese mine, Altarnun, Cornwall; and on rhodonite from other localities in Cornwall and Devonshire. Mineralogical Magazine, 27(194), 221-235.
Calcite var:
Formula: CaCO3
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 114
Caledonite
Formula: Pb5Cu2(SO4)3(CO3)(OH)6
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Cannonite
Formula: Bi2(SO4)O(OH)2
Reference: Weiß, S., Merry, M. & Ansermet, S. (2017): Neufunde aus Cornwall: Cannonit, Arthurit, Auriacusit. Lapis, 42 (1), 20-23; 62 (in German).
'Cantonite'
Reference: Davies, T. (1877) VI.— Notes on vauquelinite from Scotland, and cantonite from Cornwall. Mineralogical Magazine, vol. 1, n° 4, 112-114.
Carbonatecyanotrichite
Formula: Cu4Al2(CO3,SO4)(OH)12 · 2H2O
Reference: Ansermet, S. (2007): Lapis 32(2), 25-26, 50
Carminite
Formula: PbFe3+2(AsO4)2(OH)2
Localities: Reported from at least 12 localities in this region.
Habit: acicular
Colour: carmine-red or reddish brown
Description: Russell (1910): "The exact spot at which the mineral occurred was the 65 fathom level on the south lode, in granite."
Reference: Russell, A. (1910) On the occurrence of the rare mineral carminite in Cornwall. Mineralogical Magazine, vol. 15, n° 71, 285-287.; Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 913.; Kingsbury, A.W.G. and Hartley, J. (1960) Carminite and beudantite from the northern part of the Lake District and from Cornwall. Mineralogical Magazine, vol. 32, n° 249, 423-432. (referring to Russell 1910); Golley, P. and Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Carnotite ?
Formula: K2(UO2)2(VO4)2 · 3H2O
Description: Data are insufficient to identify the material as carnotite.
Reference: Gramaccioli (1955): Natura 46, 30-32; Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Carpholite ?
Formula: Mn2+Al2(Si2O6)(OH)4
Colour: slightly greenish
Reference: Kingsbury, A.W.G. and Hartley, J. (1957) Carpholite from Cumberland and Cornwall. Mineralogical Magazine, vol. 31, n° 237, 502.; Ryback, G., Hart, A.D., and Stanley, C.J. (2001) Journal of the Russell Society 7(2).
Cassiterite
Formula: SnO2
Localities: Reported from at least 647 localities in this region.
Description: Dolcoath Mine was renowned for high quality examples of the form of Cassiterite known as 'sparable tin', an elongate acutely tapered crystal form that bore a resemblance to hand made 'sparrow bill' nails.
Reference: Henwood, W.J. (1843) Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868) Edward Stanford (London), 168 pp.; Royal Cornwall Polytechnic Society (1870) 38. Annual Report, pp. 30-31; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906) The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Russell, A. (1920) On the occurrence of phenacite and scheelite at Wheal Cock, St. Just, Cornwall. Mineralogical Magazine, vol. 19, n° 88, 19-22.
Cassiterite var:
Formula: SnO2
Reference: Paul De Bondt collection
Cassiterite var:
Localities: Reported from at least 7 localities in this region.
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 117.
Cassiterite var:
Formula: SnO2
Localities: Reported from at least 31 localities in this region.
Reference: Hosking, K.F.G Stanley, G.J. Camm G.S. (1987) The occurrence, nature and genesis of wood tin in south-west England. Trans R.G.S.C. Vol XXI Part 4: 169-172
Cattiite
Formula: Mg3(PO4)2 · 22H2O
Reference: Handbook of Mineralogy
Celestine
Formula: SrSO4
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 101
Ceruleite
Formula: Cu2Al7(AsO4)4(OH)13 · 11.5H2O
Localities: Reported from at least 9 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Cerussite
Formula: PbCO3
Localities: Reported from at least 53 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Cervantite
Formula: Sb3+Sb5+O4
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
'Chabazite'
Reference: Russell, A. (1910): Mineralogical Magazine 15, 377-384
Chalcanthite
Formula: CuSO4 · 5H2O
Localities: Reported from at least 16 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Chalcoalumite
Formula: CuAl4(SO4)(OH)12 · 3H2O
Reference: Ansermet, S. (2007): Lapis 32(2), 25-26, 50
Chalcocite
Formula: Cu2S
Localities: Reported from at least 147 localities in this region.
Habit: Prismatic or tabular, also twinned; occasionally to several cms
Colour: Grey metallic
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Chalcomenite
Formula: CuSeO3 · 2H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Chalcophyllite
Formula: Cu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Localities: Reported from at least 29 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 452 localities in this region.
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Rudler, F.W. (1905): A Handbook to a Collection of the Minerals of the British Islands, Mostly Selected from the Ludlam Collection. HMSO Publications (London), 241 pp.; Reid, C., Scrivenor, J.B., Flett, J.S., Pollard, W., and MacAlister, D.A. (1906): The Geology of the Country near Newquay. HMSO Publications (London), 131 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 462-467
Chalcopyrite var:
Formula: CuFeS2
Localities: Reported from at least 19 localities in this region.
Reference: No reference listed
Chalcosiderite (TL)
Formula: CuFe3+6(PO4)4(OH)8 · 4H2O
Localities: Reported from at least 8 localities in this region.
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 802, 950; American Mineralogist (1965): 50: 227; Lapis (1999): 12: 9; Mineralogical Record: 12: 351-352.
'Chalcosiderite-Turquoise Series'
Reference: Eric Curtis collection (visual ID by Uwe Kolitsch)
Chamosite
Formula: (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Localities: Reported from at least 11 localities in this region.
Reference: Dines, H.G. (1956): The Metalliferous Mining Region of South-West England, Vol. 2, HMSO Publications (London), pp. 633-634
Chamosite var:
Formula: (Mg,Fe,Al)6(Si,Al)4O10(OH)8
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
Chamosite var:
Formula: (Fe,Mg)5Al(Si,Al)4O10(OH)8
Localities: Reported from at least 6 localities in this region.
Reference: Dines, H.G. (1956): The Metalliferous Mining Region of South-West England, Vol. 2, HMSO Publications (London), pp. 633-634
Chamosite var:
Formula: (Fe,Fe,Mg,Al)6(Si,Al)4O10(O,OH)8
Reference: No reference listed
'Chamosite-Clinochlore Series'
Reference: Weiss, S., Green, D.H., Hooper, J.J. & Elton, N. (2007): Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. LAPIS 32 (11), 13-25
Chenevixite (TL)
Formula: Cu2Fe3+2(AsO4)2(OH)4
Reference: Fluorite: The Collector's Choice. Extra Lapis English No. 9
Chenite ?
Formula: Pb4Cu(SO4)2(OH)6
Description: Not confirmed by analysis
Reference: g.curtis collection
Childrenite (TL)
Formula: Fe2+Al(PO4)(OH)2 · H2O
Localities: Reported from at least 29 localities in this region.
Type Locality: Devon, England, UK
Reference: American Mineralogist (1950): 35: 793; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 938; Lapis 11 (1986), 7.
Chlorargyrite
Formula: AgCl
Localities: Reported from at least 16 localities in this region.
Reference: Greg, R.P., and Lettsom, W.G. (1858): Manual of the Mineralogy of Great Britain and Ireland. John van Voorst (London), p. 244; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1871): A Handbook to the Mineralogy of Cornwall and Devon. D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 105 pp.
Chlorargyrite var:
Formula: Ag(Cl,Br)
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
'Chlorite Group'
Localities: Reported from at least 204 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Chloroxiphite ?
Formula: Pb3CuO2Cl2(OH)2
Description: No analysis given.
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Chrisstanleyite (TL)
Formula: Ag2Pd3Se4
Type Locality:
Reference: Mineralogical Magazine(1998) 62, 257-264
Chrysoberyl ?
Formula: BeAl2O4
Description: Green crystal plates ( < 2 cm) with feldspar.
Reference: Kingsbury, A.W.G. (1964) Mineralogical Magazine 35, lvii; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, 42(322), 169-177 (referring to Kingsbury).; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448 (referring to Kingsbury).; http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Localities: Reported from at least 27 localities in this region.
Reference: Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Churchite-(Y)
Formula: Y(PO4) · 2H2O
Reference: Lapis 11(2), 26 (1986); Mineralogical Magazine 1982 46 : 402-403
Claudetite ?
Formula: As2O3
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Clausthalite
Formula: PbSe
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
'Clays'
Reference: Robin Selley and Roger Eslick (2004) Cathedral Mine. BMS Newsletter 68:13-14
Clinoatacamite
Formula: Cu2(OH)3Cl
Reference: Christine Rust collection
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Localities: Reported from at least 8 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Clinochlore var:
Formula: (Mg,Fe,Al)6(Si,Al)4O10(OH)8
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Clinoclase (TL)
Formula: Cu3(AsO4)(OH)3
Localities: Reported from at least 11 localities in this region.
Habit: Often as radiating spheres of crystals.
Colour: Blue
Reference: Phillips, W. (1823) An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hall, T.M. (1868) The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Miers, H.A. (1894) Spangolite. Mineralogical Magazine, vol. 10, n° 48, 273-277.
'Clinoptilolite'
Reference: Steve Sorrell Collection
Clinoptilolite-Ca
Formula: Ca3(Si30Al6)O72·20H2O
Reference: J.Russell Socierty 2006, 68-71
'Clinoptilolite-Ca-Heulandite-Ca Series'
Reference: Paul Oldfield
Clinosafflorite
Formula: CoAs2
Reference: http://www.mineral-paradise.net/M_to_P.html (specimen #431)
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: [Robson, 1948, Transactions of the Royal Geological Society of Cornwall, 17 468]
Cobaltite
Formula: CoAsS
Localities: Reported from at least 11 localities in this region.
Reference: Hall, T.M. (1868): Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
'Coeruleolactite'
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Coffinite
Formula: U(SiO4) · nH2O
Localities: Reported from at least 6 localities in this region.
Description: Replacements of and pseudomorphs (< 5 mm) after colloform pitchblende.
Reference: Taylor, K. and Harrison, R.K. (1958) Coffinite in Cornwall. Nature, 181, 363.; Bull. geol. Surv. Gt. Britain (1966) 25, 33.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177.; Golley & Williams (1995) Cornish Mineral Reference Manual, 18.
Columbite-(Fe)
Formula: Fe2+Nb2O6
Reference: UKJMM 26:5-22
'Columbite-(Fe)-Columbite-(Mn) Series'
Description: Inclusions in topaz.
Reference: Williamson, B.J., Stanley, C.J., and Wilkinson, J.J. (1997): Contributions to Mineralogy and Petrology 127, 119-128.; Barstow, R. W. (1982). Variscite from Hensbarrow china clay works, St. Austell, Cornwall. Mineralogical magazine, 46, 512.
Columbite-(Mn)
Formula: Mn2+Nb2O6
Reference: UKJMM 26:5-22
'Columbite-Tantalite'
Reference: von Knorring, O. (1951) A Note on the Occurrence of Columbite in the Meldon Aplite, Devonshire. Mineralogical Magazine, vol. 29, n° 215, 799-801.; von Knorring, O., and Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, vol. 48, n° 348, 443-448.
Compreignacite
Formula: K2(UO2)6O4(OH)6 · 7H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
'Condurrite'
Reference: Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190 pp.; Hall, T.M. (1868): Edward Stanford (London), 168 pp.; Royal Cornwall Polytechnic Society (1870): 38. Annual Report, pp. 30-31; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Mineralogical Magazine 31, 979-980 (1958)
Conichalcite
Formula: CaCu(AsO4)(OH)
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Connellite (TL)
Formula: Cu19(SO4)(OH)32Cl4 · 3H2O
Localities: Reported from at least 51 localities in this region.
Reference: Rashleigh (1802) British Minerals Vol. 2.; Semmons, W. (1885) Notes on a recent discovery of "connellite". Mineralogical Magazine, vol. 6, n° 30, 160-163.; Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 573.
Copiapite
Formula: Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Reference: BMS Database
Copper
Formula: Cu
Localities: Reported from at least 118 localities in this region.
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 116; Rocks & Min.: 18:73; Lapis 33 (2), 2008, p. 39
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Localities: Reported from at least 6 localities in this region.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Corkite
Formula: PbFe3(PO4)(SO4)(OH)6
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Cornubite (TL)
Formula: Cu5(AsO4)2(OH)4
Localities: Reported from at least 14 localities in this region.
Reference: Claringbull, G.F., Hey, M.H., and Davis, R.J. (1959): Mineralogical Magazine 32, 1–5.; Kloprogge, J. T., & Wood, B. J. (2017). X-ray Photoelectron spectroscopic and Raman spectroscopic study of bayldonite from Wheal Carpenter, Cornwall, UK. Vacuum, 141, 49-56.
Cornwallite (TL)
Formula: Cu5(AsO4)2(OH)4
Localities: Reported from at least 17 localities in this region.
Reference: Miers, H.A. (1894) Spangolite. Mineralogical Magazine, vol. 10, n° 48, 273-277.; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications.; Anthony, Bideaux, Bladh, and Nichols (xxxx) Handbook of Mineralogy.
Corundum
Formula: Al2O3
Localities: Reported from at least 6 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Corundum var:
Formula: Al2O3
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
Cotunnite
Formula: PbCl2
Reference: No reference listed
Covellite
Formula: CuS
Localities: Reported from at least 19 localities in this region.
Description: Note that the specimens in the photos may be of post-collection growth.
Reference: Collection Richard De Nul
Crandallite
Formula: CaAl3(PO4)(PO3OH)(OH)6
Reference: Min.Rec.: 20(5): 395.; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Cristobalite
Formula: SiO2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Crocoite
Formula: PbCrO4
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Cronstedtite
Formula: Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Reference: Hey's Mineral Index 3rd ed.; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Cronstedtite-2H2'
Reference: Clays and Clay Minerals, Volume 50, Number 5, 1 October 2002, pp. 601-613(13)
Cryptomelane
Formula: K(Mn4+7Mn3+)O16
Reference: Cotterel, T.F. (2010) An unusual manganese-bearing assemblage from Restormel, Lostwithiel, Cornwall. Journal of the Russell Society 13, 53-56.
Cubanite
Formula: CuFe2S3
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Cumengeite
Formula: Pb21Cu20Cl42(OH)40 · 6H2O
Localities: Reported from at least 10 localities in this region.
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Cummingtonite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Description: Occurs in dolerite hornfels.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Cuprite
Formula: Cu2O
Localities: Reported from at least 114 localities in this region.
Habit: Octahedral, cube-octahedral
Colour: Red
Reference: Phillips, W. (1823) An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hogg, T. (1825) A Manual of Mineralogy. Polyblank Publishers (London), p. 32; Henwood, W.J. (1843) Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868) The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Miers, H.A. (1894) Spangolite. Mineralogical Magazine, vol. 10, n° 48, 273-277.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906) The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
Cuprite var:
Formula: Cu2O
Localities: Reported from at least 27 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Cuprite var:
Formula: Cu2O
Localities: Reported from at least 12 localities in this region.
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Cuprosklodowskite
Formula: Cu(UO2)2(SiO3OH]2 · 6H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Cuprotungstite
Formula: Cu2(WO4)(OH)2
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Cyanotrichite
Formula: Cu4Al2(SO4)(OH)12 · 2H2O
Localities: Reported from at least 12 localities in this region.
Reference: BMS Database
Cyrilovite
Formula: NaFe3+3(PO4)2(OH)4 · 2H2O
Reference: Mineralogical Magazine 1996 60 : 517-518.
Danalite
Formula: Be3Fe2+4(SiO4)3S
Localities: Reported from at least 6 localities in this region.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Danburite
Formula: CaB2Si2O8
Fluorescence: weak blue-violet SW-UV fluorescence
Reference: Michael S. Rumsey, George Ryback and Richard Tayler (2011) Danburite from Meldon Quarry, Okehampton and other UK localities. Journal of the Russell Society 14:26-32
Datolite
Formula: CaB(SiO4)(OH)
Localities: Reported from at least 6 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Delafossite
Formula: CuFeO2
Reference: BMS Database
Descloizite
Formula: PbZn(VO4)(OH)
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Devilline
Formula: CaCu4(SO4)2(OH)6 · 3H2O
Localities: Reported from at least 10 localities in this region.
Reference: No reference listed
Dewindtite
Formula: H2Pb3(UO2)2(PO4)4O4 · 12H2O
Reference: [Journal of the Russell Society, 6(1), 17-26 (1995)]
Diaboleite
Formula: Pb2CuCl2(OH)4
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Diadochite
Formula: Fe3+2(PO4)(SO4)(OH) · 5H2O
Reference: Sparrow, C. (1989): Russell Society Newsletter 3, 6; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Diaspore
Formula: AlO(OH)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Dickite
Formula: Al2(Si2O5)(OH)4
Localities: Reported from at least 6 localities in this region.
Reference: No reference listed
Digenite
Formula: Cu9S5
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Diopside
Formula: CaMgSi2O6
Localities: Reported from at least 7 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Diopside var:
Formula: CaMgSi2O6
Reference: Russell, A. (1910): Mineralogical Magazine 15, 377-384
Djurleite
Formula: Cu31S16
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Dolomite
Formula: CaMg(CO3)2
Localities: Reported from at least 52 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Dolomite var:
Formula: Ca(Mg,Fe)(CO3)2
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, p. 440.
Domeykite
Formula: Cu3As
Reference: Dana 6:44; Dana 7:I:172.; Mineralogical Magazine 1958 31 : 979-980
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 6 localities in this region.
Reference: Müller, A., and Halls, C. (2005), In: Jingwen Mao and Bierlein, F.P. (Eds.): Mineral Deposit Research: Meeting the Global Challenge, Vol. 1, Springer (Berlin, Heidelberg, New York), pp. 441-444
Dufrénite
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Reference: Elton, N. J. (1998): Barbosalite, frondelite and other phosphates from Gunheath China Clay Pit, St Austell, Cornwall, England. Journal of the Russell Society 7, 15-18. ; Mineralogical Magazine 1996 60 : 517-518.
Dufrénoysite
Formula: Pb2As2S5
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Duftite
Formula: PbCu(AsO4)(OH)
Reference: No reference listed
Dundasite
Formula: PbAl2(CO3)2(OH)4 · H2O
Localities: Reported from at least 9 localities in this region.
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Durangite
Formula: NaAl(AsO4)F
Description: given to BM by A.Kingsbury - should be considered suspect
Reference: Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177.; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: No reference listed
Eleonorite
Formula: Fe3+6(PO4)4O(OH)4 · 6H2O
Reference: IMA nomenclature approval
Elyite
Formula: Pb4Cu(SO4)O2(OH)4 · H2O
Reference: UK Journal of Mines & Minerals Nr. 25, 2005
Emplectite
Formula: CuBiS2
Reference: Lapis 2019
Enargite
Formula: Cu3AsS4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Enysite'
Reference: P Haas collection
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Localities: Reported from at least 17 localities in this region.
Reference: No reference listed
Epsomite
Formula: MgSO4 · 7H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Erythrite
Formula: Co3(AsO4)2 · 8H2O
Localities: Reported from at least 31 localities in this region.
Reference: No reference listed
Ettringite
Formula: Ca6Al2(SO4)3(OH)12 · 26H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Eucairite
Formula: AgCuSe
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Euclase ?
Formula: BeAl(SiO4)(OH)
Description: Originally reported by Kingsbury, that specimen is believed to have been in reality from Brazil. No euclase was proven from Cligga Head as of 2014.
Reference: Kingsbury, A.W.G. (1958) Two beryllium minerals new to Britain: euclase and herderite. Mineralogical Magazine, vol. 31, n° 240, 815-817.; Golley, P., and Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Eucryptite ?
Formula: LiAlSiO4
Reference: Fraudulent Kingsbury locality.
Eudidymite ?
Formula: Na2Be2Si6O15 · H2O
Description: Fraudulent Kingsbury locality.
Reference: Kingsbury, A.W.G. (1964) Mineralogical Magazine, 35, lvii.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, 42(322), 169-177 (referring to Kingsbury).; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448 (referring to Kingsbury).; http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi
Eulytine
Formula: Bi4(SiO4)3
Description: A specimen from J.H. Collins in the collection of the Royal Cornwall Museum, Truro (catalogue no. 1588), is labelled as eulytine from Wheal Coates, but has been shown by Clark et al. (1986) to contain no eulytine at all, but turned out to be bismutite.
Reference: Clark, A.M., Couper, A.G., Embrey, P.G., and Fejer, E.E. (1986) Mineralogical Magazine 50, 731-733.; Braithwaite, R.S.W. and Knight, J.R. (1990) Rare Minerals, Including Several New to Britain, in Supergene Alteration of U-Cu-As-Bi-Co Mineralisation Near Dalbeattie, South Scotland. Mineralogical Magazine, vol. 54, n° 374: 129-131. (referring to Clark, et al.)
Evansite ?
Formula: Al3(PO4)(OH)6 · 6H2O
Habit: Amorphous.
Colour: Milk white to creamy white, also various light to mid browns when stained by 'limonite'
Description: Many fracture surfaces in the Wavellite-rich mudstones are coated with a milky-white, amorphous material, often stained with 'limonite'. No crystalline structure has been observed in this material to date. Some fractures completely infilled with this material. Placement on the outside of wavellite balls places formation late in the mineralisation of the site. While still wet, the texture is somewhat greasy and reminiscent of fungal growth, but on drying, a fine, earthy texture is revealed, with a hardness of around 2.5 - 3 Tentative identification requires further investigation.
Reference: Alysson Rowan collection
Faustite
Formula: (Zn,Cu)Al6(PO4)4(OH)8 · 4H2O
Reference: Golley & Williams (1995): Cornish Mineral Reference Manual, p. 27
Fayalite
Formula: Fe2+2SiO4
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
'Feldspar Group'
Localities: Reported from at least 37 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
'Feldspar Group var: '
Reference: http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi
Ferberite
Formula: FeWO4
Localities: Reported from at least 15 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Feroxyhyte ?
Formula: Fe3+O(OH)
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Ferro-actinolite
Formula: ☐{Ca2}{Fe2+5}(Si8O22)(OH)2
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
Ferro-hornblende
Formula: ☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Ferrokësterite (TL)
Formula: Cu2FeSnS4
Reference: Kissin, S.A., and Owens, D.R. (1989): Canadian Mineralogist 27, 673-688
'Ferro-sadanagaite'
Formula: {Na}{Ca2}{Fe3Al2}(Al3Si5O22)(OH)2
Description: chemical composition: (Na0.59K0.43)(Ca1.99)(Mg1.32Fe2+1.90Mn2+0.03Al1.14Fe3+0.62Ti4+0.07)(Si5.24Al2.76)(O22(OH)1.6 Cl0.4)
Reference: W.A Deer, R.A. Howie, J Zussman (1997), Rock-forming minerals, double chain silicates, second edition, The geological society publication Peter Golley, Richard Williams (1995),Cornish Mineral reference manual, Endsleigh publications
Ferrostrunzite
Formula: Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Reference: Weiß, S. (1989): Lapis 14(6), 40-41; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Fersmite
Formula: (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Reference: von Knorring, O., and Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, vol. 48, n° 348, 443-448.
Feruvite
Formula: Ca(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH)
Reference: Tindle, A.G. (2008) Minerals of Britain and Ireland. Terra Publishing, Hemel Hempstead, Hertfordshire. 624pp.
Fiedlerite
Formula: Pb3FCl4(OH) · H2O
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Fischesserite
Formula: Ag3AuSe2
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Florencite-(La)
Formula: LaAl3(PO4)2(OH)6
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Fluellite (TL)
Formula: Al2(PO4)F2(OH) · 7H2O
Reference: Rudler, F.W. (1905): A Handbook to a Collection of the Minerals of the British Islands, Mostly Selected from the Ludlam Collection. HMSO Publications (London), 241 pp.; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 125; American Mineralogist (1966): 51: 1579; Embrey & Symes (1987), 52 - "Minerals of Cornwall and Devon"
Fluorapatite (TL)
Formula: Ca5(PO4)3F
Localities: Reported from at least 64 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 105 pp.
Fluorapatite var:
Formula: Ca5(PO4,CO3)3(F,O)
Localities: Reported from at least 45 localities in this region.
Reference: No reference listed
Fluorapatite var: (FRL)
Formula: Ca5(PO4,CO3)3F
Type Locality:
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 105 pp.
Fluorapatite var:
Formula: (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Fluorite
Formula: CaF2
Localities: Reported from at least 181 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Fluorite var:
Formula: CaF2
Reference: Royal Cornwall Polytechnic Society (1870): 38. Annual Report, pp. 30-31; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Fluor-schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3F
Reference: Tindle, A.G, (2008), The Minerals of Britain and Ireland. Terra Publishing. 438.
'Fluor-uvite-Uvite Series'
Reference: Tindle, A.G. (2008) Minerals of Britain and Ireland. Terra Publishing, Hemel Hempstead, Hertfordshire. 624pp.
Foitite
Formula: (□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Reference: Tindle, A.G, (2008), The Minerals of Britain and Ireland. Terra Publishing. 438.
Francevillite
Formula: Ba(UO2)2(VO4)2 · 5H2O
Description: Fourth Supplementary List of British Minerals Peter G. Embrey ** Francevillite Orthorhombic Ba(UO2)2(VO4)2.5H20 Yellow earthy crust on pitchblende nodule, at South Terras mine, St. Stephen-in-Brannell, Cornwall. BM(NH)specimen, from V. P. Aspland (1936).
Reference: Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177.; Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Franklinite
Formula: Zn2+Fe3+2O4
Description: Kingsbury specimen
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Freibergite
Formula: (Ag,Cu,◻)10Fe2+2Sb4S12
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Frondelite
Formula: Mn2+Fe3+4(PO4)3(OH)5
Reference: Elton, N. J. (1998): Barbosalite, frondelite and other phosphates from Gunheath China Clay Pit, St Austell, Cornwall, England. Journal of the Russell Society 7, 15-18.
Galena
Formula: PbS
Localities: Reported from at least 271 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Galena var:
Formula: PbS
Localities: Reported from at least 21 localities in this region.
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, p. 278.
Galena var:
Formula: PbS
Reference: Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 10
Galenobismutite ?
Formula: PbBi2S4
Reference: http://www.minerals.f9.co.uk/minloc/meldon/meldon.htm
'Ganomatite'
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
'Ganomatite var: '
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
'Garnet Group'
Formula: X3Z2(SiO4)3
Localities: Reported from at least 27 localities in this region.
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 282-284.
Genthelvite
Formula: Be3Zn4(SiO4)3S
Reference: Kingsbury, A.W.G. (1961) Beryllium Minerals in Cornwall and Devon: Helvine, Genthelvite, and Danalite. Mineralogical Magazine, vol. 32, n° 255, 921-940.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177 (referring to Kingsbury); Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications (referring to Kingsbury)
Geocronite
Formula: Pb14(Sb,As)6S23
Reference: Birnie, R. and Burnham, C.W. (1976): The crystal structure and extent of solid solution of geocronite. Am. Mineral., 61, 963-970.; [Clark, 1993 - "Hey's Mineral Index"]; Stamatova, I. V., Kunov, A. Y., & Stanchev, C. D. (2004). Geocronite and Bournonite from Occurrence Klisoura (Western Srednogone, Bulgaria). Comptes Rendus de l'Academie Bulgare des Sciences, 57(10), 53.
Gersdorffite
Formula: NiAsS
Reference: UKJMM Vol.25 p.19; UKJMM Vol.29 p.49-52
Gibbsite
Formula: Al(OH)3
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Glauconite'
Formula: (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Goethite
Formula: α-Fe3+O(OH)
Localities: Reported from at least 106 localities in this region.
Reference: Collection Richard De Nul
Gold
Formula: Au
Localities: Reported from at least 22 localities in this region.
Habit: Delicate dendritic fronds to 5 cm are leached out of calcite. Russel (1929 reports rare open pockets.
Colour: Buttery yellow to tan palladian Gold
Reference: Russell (1929); [Embrey & Symes, 1987 - "Minerals of Cornwall and Devon"]; Econ Geol (1997) 92:468-484; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Gold var:
Formula: (Au,Pd)
Reference: Mineralogical Magazine 1982 46 : 371-377; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Gorceixite
Formula: BaAl3(PO4)(PO3OH)(OH)6
Reference: Nat Hist Museum London & Steve Rust Collection
Goslarite
Formula: ZnSO4 · 7H2O
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Goyazite
Formula: SrAl3(PO4)(PO3OH)(OH)6
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Graphite
Formula: C
Localities: Reported from at least 6 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Greigite ?
Formula: Fe2+Fe3+2S4
Description: Kingsbury Specimen
Reference: Handbook of Mineralogy; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Grossular
Formula: Ca3Al2(SiO4)3
Localities: Reported from at least 7 localities in this region.
Reference: No reference listed
Grossular var:
Formula: (Ca,Sn)3Al2(SiO4)3
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; D. H. M. Alderton and N. J. Jackson Discordant Calc-Silicate Bodies from the St. Just Aureole, Cornwall Mineralogical Magazine 1978 42 : 427-434
Grunerite
Formula: ☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
'Gummite'
Habit: Massive
Colour: Brownish - may be mistaken for iron-stains.
Description: Brown haloes associated with uraninite, often dusted with Saléeite.
Reference: Alysson Rowan Collection
Gypsum
Formula: CaSO4 · 2H2O
Localities: Reported from at least 30 localities in this region.
Reference: Collection Richard De Nul
Gypsum var:
Formula: CaSO4 · 2H2O
Reference: Paul De Bondt
Halite
Formula: NaCl
Reference: Golley, P., Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications, Truro, Cornwall.
'Halloysite'
Formula: Al2(Si2O5)(OH)4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Harmotome
Formula: (Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Reference: No reference listed
Hastingsite
Formula: {Na}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(OH)2
Reference: BMS collection
Hausmannite
Formula: Mn2+Mn3+2O4
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Hedenbergite
Formula: CaFe2+Si2O6
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Helvine
Formula: Be3Mn2+4(SiO4)3S
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Hematite
Formula: Fe2O3
Localities: Reported from at least 144 localities in this region.
Reference: http://southampton.ac.uk/~imw/Torquay.htm?fbclid=IwAR09kGlfwrCDT855y-DRd36uHahVEe9LW2f2RHySR4C5wCyaj2Via4XqQf4
Hematite var:
Formula: Fe2O3
Localities: Reported from at least 32 localities in this region.
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 58; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 102.
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Hentschelite
Formula: CuFe3+2(PO4)2(OH)2
Reference: Elton, N. J. (1998): Barbosalite, frondelite and other phosphates from Gunheath China Clay Pit, St Austell, Cornwall, England. Journal of the Russell Society 7, 15-18.
Herderite
Formula: CaBe(PO4)F
Reference: von Knorring, O., and Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, vol. 48, n° 348, 443-448.
Herzenbergite
Formula: SnS
Description: Fraudulent Kingsbury locality.
Reference: http://www.mindat.org/mesg-7-92300.html; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Heteromorphite ?
Formula: Pb7Sb8S19
Description: Embrey (1978): "Two specimens from Port Isaac, Cornwall, were recorded by W. Nevill (1872) in the printed catalogue of his collection (p. 20). Doubtless omitted by Spencer from his lists because of presumed synonymy with semseyite. Confirmation is required."
Reference: Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications.
'Heulandite'
Localities: Reported from at least 10 localities in this region.
Reference: Russell, A. (1910): Mineralogical Magazine 15, 377-384
Heulandite-Ca
Formula: (Ca,Na)5(Si27Al9)O72 · 26H2O
Reference: J. Russell Socierty 2006, 68-71
Heulandite-K
Formula: (K,Ca,Na)5(Si27Al9)O72 · 26H2O
Reference: J. Russell Socierty 2006, 68-71
Hidalgoite
Formula: PbAl3(AsO4)(SO4)(OH)6
Hisingerite
Formula: Fe3+2(Si2O5)(OH)4 · 2H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Hornblende'
Localities: Reported from at least 25 localities in this region.
Reference: Hall, T.M. (1868): Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Hübnerite
Formula: MnWO4
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007): Lapis 32(11), 13-25
Humboldtine
Formula: Fe2+(C2O4) · 2H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Huttonite
Formula: ThSiO4
Reference: LeBoutillier, N. G., Shail, R. K., & Jewson, C. (2003). Monazite in polymetallic chlorite-(tourmaline)-quartz-(fluorite)-cassiterite-sulphide lodes and its potential for constraining the chronology of magmatic hydrothermal mineralisation in Cornwall.
Hydrocerussite
Formula: Pb3(CO3)2(OH)2
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Hydrokenoelsmoreite
Formula: 2W2O6(H2O)
Reference: Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007): Lapis 32(11), 13-25
Hydrokenoelsmoreite var:
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Hydroxylapatite
Formula: Ca5(PO4)3(OH)
Reference: BMS Database
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Localities: Reported from at least 7 localities in this region.
Reference: G.Curtis collection
Ikunolite
Formula: Bi4(S,Se)3
Reference: UKJMM Vol.25 p.19; UKJMM Vol.29 p.49-52
Ilmenite
Formula: Fe2+TiO3
Localities: Reported from at least 8 localities in this region.
Reference: [Golley & Williams, 1995, 34 - "Cornish Mineral Reference Manual"]
Ilvaite
Formula: CaFe3+Fe2+2(Si2O7)O(OH)
Description: A.W.G. Kingsbury specimen
Reference: A.W.G. Kingsbury specimen in the collection of the BMNH; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177 (referring to Kingsbury); Golley & Williams, 1995, 34 - "Cornish Mineral Reference Manual" (referring to Kingsbury)
'Indicolite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Reid, C., Scrivenor, J.B., Flett, J.S., Pollard, W., and MacAlister, D.A. (1906): The Geology of the Country near Newquay. HMSO Publications (London), 131 pp.; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Isomertieite
Formula: Pd11Sb2As2
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; Mineralogical Magazine 1982 46 : 371-377; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Ixiolite
Formula: (Ta,Nb,Sn,Fe,Mn)4O8
Reference: No reference listed
Jacobsite
Formula: Mn2+Fe3+2O4
Reference: Cotterel, T.F. (2010) An unusual manganese-bearing assemblage from Restormel, Lostwithiel, Cornwall. Journal of the Russell Society 13, 53-56.
Jamesonite
Formula: Pb4FeSb6S14
Localities: Reported from at least 19 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, p. 577
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Localities: Reported from at least 13 localities in this region.
Reference: Weiss, S., Green, D.H., Hooper, J.J. & Elton, N. (2007): Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. LAPIS 32 (11), 13-25
Jeanbandyite
Formula: Fe3+xFe2+1-xSn(OH)6-xOx (1 >= x > 0.5)
Reference: Weiss, S., Green, D.H., Hooper, J.J. & Elton, N. (2007): Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. LAPIS 32 (11), 13-25; Betterton J, Green D I, Jewson C, Spratt J, Tandy P (1998) The composition and structure of jeanbandyite and natanite. Mineralogical Magazine 62, 707-712
Johannite
Formula: Cu(UO2)2(SO4)2(OH)2 · 8H2O
Reference: Paul De Bondt collection
Johannsenite
Formula: CaMn2+Si2O6
Reference: [Specimen in the Natural History Museum, London]
'Joséite'
Formula: Bi4TeS2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Joséite-B
Formula: Bi4Te2S
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Kaersutite
Formula: {Na}{Ca2}{Mg3AlTi}(Al2Si6O22)O2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Kaňkite
Formula: FeAsO4 · 3.5H2O
Description: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp. Without analytical validation.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Localities: Reported from at least 57 localities in this region.
Reference: No reference listed
Kasolite
Formula: Pb(UO2)[SiO4] · H2O
Reference: SUPERGENE U-Pb-Cu MINERALISATION AT LOE WARREN, ST JUST, CORNWALL, ENGLAND Nicholas J. ELTON Tregears. Little Treviscoe. St Austell. Cornwall PL26 7QL Jeremy J. HOOPER 48 St Julitta. Luxulyan. Bodrrtin. Cornwall PL30 5ED (Kasolite has also been identified at South Terras mine, St Stephen, Cornwall (R.S.W. Braithwaite specimen, NHM X-ray film 12846), associated with torbernite/metatorbernite and a phosphuranylite group mineral (Braithwaite,personal communication). Journal of the Russell Society. 6(1). 17-26 (l995j
Kermesite
Formula: Sb2S2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Kësterite
Formula: Cu2ZnSnS4
Reference: Dr. Kurt Greenwall collection (Dr. Werner H. Paar analyses)
'K Feldspar'
Localities: Reported from at least 20 localities in this region.
Reference: Collection Richard De Nul
'K Feldspar var: '
Formula: KAlSi3O8
Localities: Reported from at least 13 localities in this region.
Reference: Collection Richard De Nul
Kidwellite
Formula: NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Reference: Mineralogical Magazine, 43, 952-953; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Klockmannite
Formula: CuSe
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
'Köttigite-Parasymplesite Series' ?
Description: Specimen EDAX at Man University. Outcome was that specimen was probably Köttigite-Parasymplsite
Reference: Tony Aldworth collection
Kröhnkite
Formula: Na2Cu(SO4)2 · 2H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Kuramite
Formula: Cu3SnS4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Lanarkite
Formula: Pb2(SO4)O
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Langite (TL)
Formula: Cu4(SO4)(OH)6 · 2H2O
Localities: Reported from at least 49 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications; Peter G. Embrey (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine 42:169-177
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Reference: UKJMM 26:5-22
Laurionite
Formula: PbCl(OH)
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Lavendulan
Formula: NaCaCu5(AsO4)4Cl · 5H2O
Reference: [Golley & Williams, 1995, 37 - "Cornish Mineral Reference Manual"]
Lead
Formula: Pb
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]
Leadhillite
Formula: Pb4(CO3)2(SO4)(OH)2
Localities: Reported from at least 6 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Lepidocrocite
Formula: γ-Fe3+O(OH)
Localities: Reported from at least 12 localities in this region.
Reference: No reference listed
'Lepidolite'
Localities: Reported from at least 9 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Leucophanite ?
Formula: NaCaBeSi2O6F
Reference: Fraudulent Kingsbury locality.
Leucophosphite
Formula: KFe3+2(PO4)2(OH) · 2H2O
Reference: Elton, N. J. (1998): Barbosalite, frondelite and other phosphates from Gunheath China Clay Pit, St Austell, Cornwall, England. Journal of the Russell Society 7, 15-18. ; Mineralogical Magazine 1996 60 : 517-518.
Libethenite
Formula: Cu2(PO4)(OH)
Localities: Reported from at least 18 localities in this region.
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Liebigite
Formula: Ca2(UO2)(CO3)3 · 11H2O
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 241.; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Likasite
Formula: Cu3(NO3)(OH)5 · 2H2O
Description: Probably anthropogenic, due to the use of explosives from which nitrate derives (Weiss et al., 2007).
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007): Lapis 32 (11), 13-25, 54
'Limonite'
Formula: (Fe,O,OH,H2O)
Localities: Reported from at least 138 localities in this region.
Reference: No reference listed
Linarite
Formula: PbCu(SO4)(OH)2
Localities: Reported from at least 22 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Liroconite (TL)
Formula: Cu2Al(AsO4)(OH)4 · 4H2O
Localities: Reported from at least 10 localities in this region.
Habit: most typically as flattened bipyramids
Colour: blue
Reference: Phillips, W. (1823) An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hall, T.M. (1868) The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892) A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Miers, H.A. (1894) Spangolite. Mineralogical Magazine, vol. 10, n° 48, 273-277.; American Mineralogist (1951) 36: 484.; Embrey, P.G. and Symes, R.F. (1987) Minerals of Cornwall and Devon. British Museum (Natural History), London, 154 pp.; Rocks & Minerals: 60(1): 24.
Liskeardite (TL)
Formula: [(Al,Fe)32(AsO4)18(OH)42(H2O)22] · 52H2O
Reference: Bulletin de la Société française de Minéralogie et de Cristallographie (1952): 75: 71.
Löllingite
Formula: FeAs2
Localities: Reported from at least 20 localities in this region.
Reference: M. C. George, M. Stone, E. E. Fejer and R. F. Symes (1981). Triplite from the Megiliggar Rocks, Cornwall. Mineralogical Magazine 44:236-238
Ludlamite (TL)
Formula: Fe2+3(PO4)2 · 4H2O
Type Locality:
Reference: Phil. Mag., 5th ser. (1877): 3, 52; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 953; Embrey & Symes (1987) "Minerals of Cornwall and Devon": 112.
Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 25 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Malachite
Formula: Cu2(CO3)(OH)2
Localities: Reported from at least 127 localities in this region.
Reference: Richard De Nul collection
Malayaite
Formula: CaSn(SiO4)O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Malhmoodite
Formula: FeZr(PO4)2 · 4H2O
Reference: BMS Database
'Manganese Oxides'
Localities: Reported from at least 10 localities in this region.
Reference: Dines, H.G. (1956): The Metalliferous Mining Region of South-West England, Vol. 2, HMSO Publications (London), pp. 641-644
'Manganese Oxides var: '
Habit: Dendritic - coarsely crystalline to lacy dendritic encrustations.
Colour: Black
Description: The development of manganese dendrites is particularly varied in this quarry - ranging from coarse, tangible crystals infilling fracture voids down to delicate, mossy developments across the siltstone surfaces. In places, these developments do present a particular aesthetic appeal.
Reference: Alysson Rowan Collection
Manganite
Formula: Mn3+O(OH)
Localities: Reported from at least 11 localities in this region.
Reference: Paul Render
Manganosite
Formula: MnO
Reference: Bernie Millington Collection
Mansfieldite
Formula: AlAsO4 · 2H2O
Reference: Golley, P., Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications, Truro, Cornwall.
Marcasite
Formula: FeS2
Localities: Reported from at least 31 localities in this region.
Reference: Steve Rust collection; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Marcasite var:
Formula: Fe(S,As)2
Reference: No reference listed
Marialite
Formula: Na4Al3Si9O24Cl
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
Matlockite
Formula: PbFCl
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Mattheddleite
Formula: Pb5(SiO4)1.5(SO4)1.5(Cl,OH)
Habit: Prismatic
Colour: White
Reference: Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines & Minerals, 20, 7-37.
Mawsonite
Formula: Cu6Fe2SnS8
Reference: Dr. Kurt Greenwall collection (Dr. Werner H. Paar analyses)
Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
Localities: Reported from at least 16 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
'Melilite Group'
Formula: Ca2M(XSiO7)
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Mendipite
Formula: Pb3Cl2O2
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Meneghinite
Formula: Pb13CuSb7S24
Reference: http://www.english-nature.org.uk/citation/citation_photo/1001318.pdf
Mertieite-II
Formula: Pd8Sb2.5As0.5
Reference: Mineralogical Magazine 1982 46 : 371-377; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Mesolite
Formula: Na2Ca2Si9Al6O30 · 8H2O
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6-8H2O
Habit: Tabular, highly metamict; encrusting
Colour: Pale, dull green to greenish yellow
Fluorescence: Rects strongly under Long Wave UV light with characteristic yellowish green.
Description: Dull green to yellow metamict crystal groups found on weathered granite surfaces, also crustiform coatings. Crystals to 0.5mm
Reference: Alysson Rowan Collection
'Meta-autunite Group'
Formula: A(UO2)2(XO4)2·nH2O (n = 6, 7 or 8)
Reference: Rocks & Min.: 60(1):25.
Metanováčekite
Formula: Mg(UO2)2(AsO4)2 · 8H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Metasaléeite
Formula: Mg(UO2)2(PO4)2 · 8H2O
Description: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp. Without analytical validation.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Metatorbernite (TL)
Formula: Cu(UO2)2(PO4)2 · 8H2O
Localities: Reported from at least 14 localities in this region.
Reference: Arthur Francis Hallimond, 1916, Crystallography and Dehydration of Torbernite, Mineralogical Magazine, 17, p. 326-339.
'Metatorbernite-Metazeunerite Series'
Reference: S.Rust collection.
Metatyuyamunite ?
Formula: Ca(UO2)2(VO4)2 · 3-5H2O
Habit: bladed, earthy
Colour: yellow
Description: Seen as minute, yellowish crusts of tiny crystals on the surface of black nodules. Tentatively identified through similarity with the mineral as seen on the Budleigh Salterton nodules.
Reference: Alysson Rowan Collection
Metavanuralite
Formula: Al(UO2)2(VO4)2(OH) · 8H2O
Description: Associated with vanadian enriched Goethite
Reference: Claire L. Corkhill et al (2017) Multi-scale investigation of uranium attenuation by arsenic at an abandoned uranium mine, South Terras
Metavariscite
Formula: AlPO4 · 2H2O
Reference: Elton, N. J. (1996). Variscite and Metavariscite from Gunheath China Clay Pit, St Austell, Cornwall. Mineralogical Magazine, 60(4), 671-672. http://www.minersoc.org/pages/Archive-MM/Volume_60/60-401-671.pdf
Metavivianite ?
Formula: Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Habit: botryoidal, encrusting
Colour: bottle green to greenish-black
Description: Seen as bottle-green to greenish-black encrustations on surfaces and within fractures. Tentatively identified as metavivianite through inference from understood local chemistry and similarity to other occurrances.
Reference: Alysson Rowan Collection
Metavoltine
Formula: Na6K2FeFe6(SO4)12O2 · 18H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Metazeunerite
Formula: Cu(UO2)2(AsO4)2 · 8H2O
Localities: Reported from at least 7 localities in this region.
'Mica Group'
Localities: Reported from at least 7 localities in this region.
Reference: Richard De Nul Collection
Microcline
Formula: K(AlSi3O8)
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
Reference: BMS Database
Milarite ?
Formula: K2Ca4Al2Be4Si24O60 · H2O
Reference: Kingsbury, A.W.G. (1964) Mineralogical Magazine, 35, lvii.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, 42(322), 169-177 (referring to Kingsbury).; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448 (referring to Kingsbury).; http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi
Millerite
Formula: NiS
Localities: Reported from at least 10 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Mimetite
Formula: Pb5(AsO4)3Cl
Localities: Reported from at least 26 localities in this region.
Colour: colourless to cream-coloured
Reference: Russell, A. (1910) On the occurrence of the rare mineral carminite in Cornwall. Mineralogical Magazine, vol. 15, n° 71, 285-287.; Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 913.
Minium
Formula: Pb3O4
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Mitridatite
Formula: Ca2Fe3+3(PO4)3O2 · 3H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Mixite
Formula: BiCu6(AsO4)3(OH)6 · 3H2O
Localities: Reported from at least 11 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Molybdenite
Formula: MoS2
Localities: Reported from at least 30 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007): Lapis 32(11), 13-25
'Monazite'
Localities: Reported from at least 17 localities in this region.
Reference: Martin Stolworthy Collection
Monazite-(Ce)
Formula: Ce(PO4)
Localities: Reported from at least 7 localities in this region.
Habit: Platy pseudohexagonal
Colour: Pale brown
Reference: UKJMM No17
Monazite-(La)
Formula: La(PO4)
Habit: Tabular
Colour: Black
Reference: Betterton, J. (1996) Monazite-(La) and Anatase from Penberthy Croft Mine, St. Hilary, Cornwall. UK Journal of Mines & Minerals, 16, 13.
Montebrasite
Formula: LiAl(PO4)(OH)
Reference: Kingsbury, A.W.G. (1964) in 'Present views on some aspects of the geology of Cornwall and Devon' (Roy. geol. Soc. Cornwall), p. 249; Moss, A.A., Fejer, E.E., Embrey, P.G. (1969) On the X-Ray Identification of Amblygonite and Montebrasite. Mineralogical Magazine, 37(287), 414-422.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, 42(322), 169-177.; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448.; Andy Tindle microprobe analysis; http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Reference: Collins, J.H. (1878): Mineralogical Magazine 2, 92-94; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Morinite
Formula: NaCa2Al2(PO4)2(OH)F4 · 2H2O
Reference: Elton, N. J., Hooper, J. J., & Coggon, L. (1996). Morinite from Gunheath China Clay Pit, St Austell, Cornwall. Mineralogical Magazine, 60(3), 517-518. http://www.minersoc.org/pages/Archive-MM/Volume_60/60-400-517.pdf
Mottramite
Formula: PbCu(VO4)(OH)
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Mpororoite
Formula: WAlO3(OH)3 · 2(H2O)
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007): Lapis 32(11), 13-25
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 50 localities in this region.
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Muscovite var:
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 17 localities in this region.
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Muscovite var:
Formula: KAl2(AlSi3O10)(OH)2
Reference: No reference listed
Muscovite var:
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 9 localities in this region.
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 629-631
Nacrite
Formula: Al2(Si2O5)(OH)4
Nadorite
Formula: PbSbClO2
Localities: Reported from at least 6 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Nantokite
Formula: CuCl
Reference: [Golley & Williams, 1995, 44 - "Cornish Mineral Reference Manual"]
Natanite
Formula: Fe2+[Sn(OH)6]
Reference: [C.Jewson, pers. comm.]; Weiss, S., Green, D.H., Hooper, J.J. & Elton, N. (2007): Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. LAPIS 32 (11), 13-25
Natrojarosite
Formula: NaFe3(SO4)2(OH)6
Reference: Paul Render
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp
'Natromontebrasite'
Reference: No reference listed
Natron
Formula: Na2CO3 · 10H2O
Description: According to Golley & Williams, there are reports predating the paper by Bowell, but they are doubtful.
Reference: Bowell, R.J. (1992): Journal of the Russell Society 4(2), 51; Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Natropharmacosiderite
Formula: (Na,K)Fe3+4(AsO4)3(OH)4 · 6-7H2O
Reference: Weiß, S., Merry, M. & Ansermet, S. (2017): Neufunde aus Cornwall: Cannonit, Arthurit, Auriacusit. Lapis, 42 (1), 20-23; 62 (in German).
Natrozippeite
Formula: Na5(UO2)8(SO4)4O5(OH)3 · 12H2O
Reference: MINERALOGICAL MAGAZINE, (1993), VOL 57, PP. 352-354
Naumannite
Formula: Ag2Se
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Neotocite
Formula: (Mn,Fe,Mg)SiO3 · H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Nickeline
Formula: NiAs
Localities: Reported from at least 8 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Nickelskutterudite
Formula: (Ni,Co,Fe)As3
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Reference: Royal Cornwall Polytechnic Society (1870): 38. Annual Report, pp. 30-31
Nováčekite-I
Formula: Mg(UO2)2(AsO4)2 · 12H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
'Ochre'
Localities: Reported from at least 6 localities in this region.
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 445-446
Olivenite (TL)
Formula: Cu2(AsO4)(OH)
Localities: Reported from at least 34 localities in this region.
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Olivenite var:
Olivenite var:
Reference: No reference listed
Opal
Formula: SiO2 · nH2O
Localities: Reported from at least 45 localities in this region.
Reference: Weiss, S., Green, D.H., Hooper, J.J. & Elton, N. (2007): Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. LAPIS 32 (11), 13-25
Opal var:
Formula: SiO2 · nH2O
Habit: none: massive
Colour: white to off-white
Fluorescence: none
Description: Redeposited silica tubes formed in cracks in the Codden Hill Cherts which host a number of phosphate species. These thin-walled tubes appear to have formed in much the same way as speleothem 'straws', and various walls and ramifications appear across the rock surfaces. These same cracks also play host to the various phosphate minerals found at this location.
Reference: Alysson Rowan Collection
Opal var:
Formula: SiO2 · nH2O
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.
Opal var:
Formula: SiO2 · nH2O
Reference: Pete Nancarrow personal collection
Opal var:
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358
Opal var:
Formula: SiO2 · nH2O
Reference: [Specimen in the Natural History Museum, London]
Orpiment
Formula: As2S3
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Orthoclase
Formula: K(AlSi3O8)
Localities: Reported from at least 49 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Palygorskite
Formula: (Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
Paracostibite ?
Formula: CoSbS
Description: Confirmed on a specimen from the Kingsbury collection, which may be from another locality.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Paralaurionite
Formula: PbCl(OH)
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Parasymplesite
Formula: Fe2+3(AsO4)2 · 8H2O
Colour: Ash-grey green crystals and tuffs
Description: In July 2013, some weathered specimens of nickelskutterudite where found on the mine site. Broken open, some needle-like crystals where found, only visible thru a binocular. Recent analysis results show clearly parasymplesite. The mineral is probably from post mining origin.
Reference: Paul De Bondt collection; Merry, M. & Weiß, S. (2017): Nickel- und Kobaltmineralien aus der St. Austell Consols Mine, Cornwall (GB). Lapis, 42 (1), 24-26; 39-40; 62 (in German).
Paratacamite
Formula: Cu3(Cu,Zn)(OH)6Cl2
Localities: Reported from at least 15 localities in this region.
Reference: [Golley & Williams, 1995, 46 - "Cornish Mineral Reference Manual"]
Pargasite
Formula: {Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Parkerite
Formula: Ni3(Bi,Pb)2S2
Reference: UKJMM Vol.25 p.19; UKJMM Vol.29 p.49-52
Parnauite
Formula: Cu9(AsO4)2(SO4)(OH)10 · 7H2O
Localities: Reported from at least 8 localities in this region.
Reference: [Golley & Williams, 1995, 47 - "Cornish Mineral Reference Manual"]
Parsonsite
Formula: Pb2(UO2)(PO4)2
Reference: Claire L. Corkhill et al (2017) Multi-scale investigation of uranium attenuation by arsenic at an abandoned uranium mine, South Terras
Penberthycroftite (TL)
Formula: [Al6(AsO4)3(OH)9(H2O)5]·8H2O
Type Locality:
Colour: White
Description: Penberthcroftite occurs as tufts of white, ultrathin (sub-micrometre) rectangular laths, with lateral dimensions generally < 20 μm. The laths are flattened on {010} and elongated on [100] [Grey et.al. 2016].
Reference: Grey, I.E., Betterton, J., Kampf, A.R., Price, J.R. and MacRae, C.M. (2015) Penberthycroftite, IMA 2015-025. CNMNC Newsletter No. 26, August 2015, page 943. Mineralogical Magazine, 79, 941-947. Grey, I.E., Betterton, J., Kampf, A.R., Macrae, C.M., Shanks, F.L., Price, J.R. (2016) Penberthycroftite, [Al₆(AsO₄)₃(OH)₉ (H₂O)₅ ]·8H₂O, a second new hydrated aluminium arsenate mineral from the Penberthy Croft mine, St. Hilary, Cornwall, UK. Mineralogical Magazine, 80:7, 1149-1160.
Penfieldite
Formula: Pb2Cl3(OH)
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Penroseite
Formula: (Ni,Co,Cu)Se2
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Petalite
Formula: LiAl(Si4O10)
Reference: McLintock, W.F.P. (1923) On the occurrence of petalite and pneumatolytic apatite in the Meldon aplite, Okehampton, Devonshire. Mineralogical Magazine, 20(103), 140-150.; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448.; http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi;
'Petroleum'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Pharmacoalumite
Formula: KAl4(AsO4)3(OH)4 · 6.5H2O
Reference: Grey, I.E., Kampf, A.R., Price, J.R., Macrae, C.M. (2015) Bettertonite, [Al₆(AsO₄)₃(OH)₉ (H₂O)₅ ]·11H₂O, a new mineral from the Penberthy Croft mine, St. Hilary, Cornwall, UK, with a structure based on polyoxometalate clusters. Mineralogical Magazine, 79:7, 1849-1858.
Pharmacosiderite (TL)
Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O
Localities: Reported from at least 43 localities in this region.
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 63; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Phenakite
Formula: Be2SiO4
Localities: Reported from at least 12 localities in this region.
Reference: [Golley & Williams, 1995 - "Cornish Mineral Reference Manual"]
Philipsbornite
Formula: PbAl3(AsO4)(AsO3OH)(OH)6
Reference: Green, D. Tindle, A. Jewson,C (2005 ) Philipsbornite from Wheal Unity Mines & Minerals No25
Philipsburgite
Formula: (Cu,Zn)6(AsO4,PO4)2(OH)6 · H2O
Reference: Golley, P., Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications, Truro, Cornwall.
'Phillipsite subgroup' ?
Description: May be reference to philipsburgite
Reference: Kloprogge, J. T., & Wood, B. J. (2017). X-ray Photoelectron spectroscopic and Raman spectroscopic study of bayldonite from Wheal Carpenter, Cornwall, UK. Vacuum, 141, 49-56.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: No reference listed
Phosgenite
Formula: Pb2CO3Cl2
Localities: Reported from at least 17 localities in this region.
Reference: [Golley & Williams, 1995, 47 - "Cornish Mineral Reference Manual"]
Phosphohedyphane
Formula: Ca2Pb3(PO4)3Cl
Reference: Rob Bowell, pers. comm. (Cardiff University analysis)
Phosphosiderite
Formula: FePO4 · 2H2O
Reference: Sparrow, C. (1989): Russell Society Newsletter 3, 6; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Phosphuranylite ?
Formula: (H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Description: A specimen that was collected by Barstow shows an XRD pattern similar to that of phosphuranylite.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
'Phosphuranylite Group'
Reference: SUPERGENE U-Pb-Cu MINERALISATION AT LOE WARREN, ST JUST, CORNWALL, ENGLAND Nicholas J. ELTON Tregears. Little Treviscoe. St Austell. Cornwall PL26 7QL Jeremy J. HOOPER 48 St Julitta. Luxulyan. Bodrrtin. Cornwall PL30 5ED Journal of the Russell Society. 6(1). 17-26 (l995j Kasolite has also been identified at South Terras mine, St Stephen, Cornwall (R.S.W. Braithwaite specimen, NHM X-ray film 12846), associated with torbernite/metatorbernite and a phosphuranylite group mineral (Braithwaite, personal communication).
Phurcalite
Formula: Ca2(UO2)3(PO4)2O2 · 7H2O
Reference: Braitwaite, R., Paar, W., and Chisholm, J., 1989, Phurcalite from Dartmoor, Southwest England,and its Identity with 'Nisaite' from Portugal, Mineralogical Magazine, 53:583-589. Min.Rec.: 20(5):395.
Pigeonite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Pigotite
Formula: Al4C6H5O10 · 13H2O (?)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Pinite'
Localities: Reported from at least 9 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Pitticite
Formula: (Fe, AsO4, H2O) (?)
Reference: Royal Cornwall Polytechnic Society (1870): 38. Annual Report, pp. 30-31
Plagionite
Formula: Pb5Sb8S17
Reference: [Golley & Williams, 1995, 48 - "Cornish Mineral Reference Manual"]
Plancheite ?
Formula: Cu8(Si8O22)(OH)4 · H2O
Reference: [Golley & Williams, 1995, 48 - "Cornish Mineral Reference Manual"]
'Planerite-Turquoise Series'
Description: Originally reported to be coeruleolactite. All purported coeruleolactite examined by the authors of the 1998 report (Foord, E.E. & Taggart, J.E.) were largely Planerite, or Occasionally turquoise. Published analysis indicates that the vacany in the 'A' site is between 0.51-0.54 atom fraction, the balance in Cu-0.40 and Zn-0.06 to 0.09. It is suggested by this analysis that the turquoise structure likely cannot accomodate Ca in the 'A' site.
Reference: [Golley & Williams, 1995, "Cornish Mineral Reference Manual", 18] Foord, E.E. & Taggart, J.E. (1998): A reexamination of the turquoise group; the mineral aheylite, planerite (redefined), turquoise and coeruleolactite. Mineralogical Magazine, 62, 93-111.
Plattnerite ?
Formula: PbO2
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
'Plumbago'
Reference: A.K. Hamilton Jenkin: Annotations to Ordnance Survey map, Sheet 59NW
'Plumbic Ochre'
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Plumbogummite
Formula: PbAl3(PO4)(PO3OH)(OH)6
Reference: Paul De Bondt collection
'Plumbogummite Group'
Description: The partly defined mineral forms tiny micro-crystals to 0.25mm with a pseudocubic habit, and a white to flesh pink colouration. Associated with cassiterite and tourmaline on quartz.
Reference: Steve Rust Collection
Plumbojarosite
Formula: Pb0.5Fe3+3(SO4)2(OH)6
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
'Plumosite'
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, p. 577.
Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
Reference: http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448 (referring to Kingsbury).
Polybasite
Formula: [(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual, p. 48. Endsleigh Publications.
Polybasite-Tac
Reference: No reference listed
Posnjakite
Formula: Cu4(SO4)(OH)6 · H2O
Description: a component of blue-green crusts considered to be post mining in origin. It forms blue subhedral crystal to about 0.2mm ref: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Reference: [Golley & Williams, 1995, 49 - "Cornish Mineral Reference Manual"]
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Localities: Reported from at least 7 localities in this region.
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp
Priceite ?
Formula: Ca2B5O7(OH)5 · H2O
Description: Fraudulent Kingsbury locality.
Reference: http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi
Pseudoboleite
Formula: Pb31Cu24Cl62(OH)48
Reference: BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Pseudomalachite
Formula: Cu5(PO4)2(OH)4
Localities: Reported from at least 23 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Braithwaite, R. S. W., & Ryback, G. (1994). Reichenbachite from Cornwall and Portugal. Mineralogical Magazine, 58(392), 449-454.
'Psilomelane'
Formula: Mn, O
Localities: Reported from at least 16 localities in this region.
Reference: Paul Render
Pumpellyite-(Mg)
Formula: Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Reference: [Golley & Williams, 1995, 49 - "Cornish Mineral Reference Manual"]
Pyrargyrite
Formula: Ag3SbS3
Localities: Reported from at least 13 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 105 pp.
Pyrite
Formula: FeS2
Localities: Reported from at least 404 localities in this region.
Reference: Mineralogical Magazine 1965 34 : 159-176.
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
Pyrochroite
Formula: Mn(OH)2
Habit: none
Description: Green earthy patches with occasional microscopic bright crystals.
Reference: Bernie Millington Collection
Pyrolusite
Formula: Mn4+O2
Localities: Reported from at least 24 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Russell, A. (1945): Mineralogical Magazine 27, 221-235; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Pyromorphite
Formula: Pb5(PO4)3Cl
Localities: Reported from at least 35 localities in this region.
Reference: Weiss, S., Green, D.H., Hooper, J.J. & Elton, N. (2007): Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. LAPIS 32 (11), 13-25
Pyrosmalite-(Fe)
Formula: Fe2+8Si6O15(OH,Cl)10
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Pyrostilpnite
Formula: Ag3SbS3
Reference: Starkey, R. E. (2012) The Herodsfoot Mine, Lanreath, Cornwall, England. Mineralogical Record 43:411-486.
'Pyroxene Group'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp
Pyrrhotite
Formula: Fe1-xS
Localities: Reported from at least 23 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Qitianlingite ?
Formula: (Fe,Mn)2(Nb,Ta)2WO10
Description: Microscopic inclusion in topaz. Inclusions in topaz analyzed only by ICP-OES and Raman spectrometry. Without XRD orthorhombic qitianlingite can not be distinguished from monoclinic "wolframoixiolite". Qitianlingite must be therefore regarded as unconfirmed.
Reference: Williamson, B.J., Stanley, C.J., and Wilkinson, J.J. (1997): Contributions to Mineralogy and Petrology 127, 119-128.
Quartz
Formula: SiO2
Localities: Reported from at least 604 localities in this region.
Reference: http://southampton.ac.uk/~imw/Torquay.htm?fbclid=IwAR09kGlfwrCDT855y-DRd36uHahVEe9LW2f2RHySR4C5wCyaj2Via4XqQf4
Quartz var:
Localities: Reported from at least 8 localities in this region.
Reference: Paul De Bondt collection;
Quartz var:
Formula: SiO2
Localities: Reported from at least 47 localities in this region.
Reference: [Golley & Williams, 1995 - "Cornish Mineral Reference Manual", 51; Min.Rec.: 20(5): 395.]
Quartz var:
Formula: SiO2
Reference: http://southampton.ac.uk/~imw/Torquay.htm?fbclid=IwAR09kGlfwrCDT855y-DRd36uHahVEe9LW2f2RHySR4C5wCyaj2Via4XqQf4
Quartz var:
Reference: No reference listed
Quartz var:
Reference: Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 194
Quartz var:
Formula: SiO2
Localities: Reported from at least 47 localities in this region.
Reference: Collection Richard De Nul
Quartz var:
Formula: SiO2
Localities: Reported from at least 6 localities in this region.
Reference: [Golley & Williams, 1995 - "Cornish Mineral Reference Manual", 51]
Quartz var:
Formula: SiO2
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386
Quartz var:
Formula: SiO2
Reference: Peter Trebilcock collection
Quartz var:
Formula: SiO2
Reference: Hall, T.M. (1868): Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Quartz var:
Localities: Reported from at least 25 localities in this region.
Reference: Hall, T.M. (1868): Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Quartz var:
Formula: SiO2
Reference: Mineralogical Magazine 1965 34 : 159-176.
Quartz var:
Formula: SiO2
Reference: Hall, T.M. (1868): Edward Stanford (London), 168 pp., Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Quartz var:
Formula: SiO2
Localities: Reported from at least 31 localities in this region.
Reference: Lapis 11(2), 34-38 (1986)
Quartz var:
Formula: SiO2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Quartz var:
Formula: SiO2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Quartz var:
Formula: SiO2
Localities: Reported from at least 26 localities in this region.
Reference: Mineralogical Magazine 1965 34 : 159-176.
Rammelsbergite
Formula: NiAs2
Reference: Mineralogical Magazine 1965 34 : 159-176.
Ramsbeckite
Formula: (Cu,Zn)15(SO4)4(OH)22 · 6H2O
Reference: Steve Rust
Raspite
Formula: Pb(WO4)
Reference: David P. Clough Collection. Collected 14 June 2013. Natural History Museum (London) identification 12 July 2013.
Rauenthalite
Formula: Ca3(AsO4)2 · 10H2O
Reference: Braithwaite, R.S.W., et al., Journal of the Russell Society 6(2), 100-101(1996):
Realgar
Formula: As4S4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Redgillite
Formula: Cu6(SO4)(OH)10 · H2O
Reference: Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines & Minerals, 20, 7-37. Pluth, J.J., Steele, I.M., Kampf, A.R., Green, D.I. (2005) Redgillite, Cu₆(OH)₁₀(SO₄ )•H₂O, a new mineral from Caldbeck Fells, Cumbria, England: description and crystal structure. Mineralogical Magazine, 69:6, 973-980.
Reichenbachite
Formula: Cu5(PO4)2(OH)4
Reference: Braithwaite, R.S.W., and Ryback, G. (1994): Mineralogical Magazine 58, 449-454; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Rhabdophane-(Ce) (TL)
Formula: Ce(PO4) · H2O
Type Locality:
Reference: No reference listed
Rhabdophane-(Nd)
Formula: Nd(PO4) · H2O
Description: Reported from Fowey Consols by Arthur Kingsbury, but this report is now believed to be fake. (Alan Hart, pers. comm. 2008)
Reference: Mineralogical Magazine 48, 146-148(1984); Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Rhodizite ?
Formula: (K,Cs)Al4Be4(B,Be)12O28
Description: Fraudulent Kingsbury locality.
Reference: http://www.mindat.org/mesg-7-92300.html; http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi; Embrey, P.G. (1973) Memorial of Arthur William Gerald Kingsbury. American Mineralogist, 58, 372-375.; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448 (referring to Kingsbury).
Rhodochrosite
Formula: MnCO3
Localities: Reported from at least 15 localities in this region.
Reference: collected by G Moffatt, Pendeen
Rhodonite
Formula: Mn2+SiO3
Localities: Reported from at least 15 localities in this region.
Reference: Russell, A. (1945): Mineralogical Magazine 27, 221-235
Rockbridgeite
Formula: Fe2+Fe3+4(PO4)3(OH)5
Localities: Reported from at least 7 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
'Roméite Group'
Formula: A2(Sb5+)2O6Z
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Roquesite
Formula: CuInS2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications; Brougha, C., Pricharda, H. M., Nearyb, C., Pearcea, J. A., & Kozlu-Erdalc, H. (2009). SA62 6JY. cThe General Directorate of Mineral Research and Exploration (MTA), Mineralogy and Petrography, TR-06520 Ankara-Turkey. The presence of Pt, Pd and Rh (PPGE) and Os, Ir and. Applied Earth Science (Trans. Inst. Min. Metall. B), 118(1), 21.
Rosasite
Formula: (Cu,Zn)2(CO3)(OH)2
Reference: Collection Richard De Nul
Roscherite
Formula: Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O
Habit: Spherules with radiating fibrous structure and silky-crystalline exterior to 5 mm across; flat radiating aggregates to 1 cm in size
Colour: Dark sage-green
Reference: Clark, A.M., Fejer, E.E., Couper, A.G., von Knorring, O., Turner, R.W., and Barstow, R.W. (1983): Mineralogical Magazine 47, 81-83; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Rossmanite
Formula: ☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Tindle, A.G. (2008) Minerals of Britain and Ireland. Terra Publishing, Hemel Hempstead, Hertfordshire. 624pp.
Russellite (TL)
Formula: Bi2WO6
Reference: [Clark, 1993 - "Hey's Mineral Index"]; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications; Hey M H, Bannister F A, Russell A (1938) Russellite, a new British mineral, Mineralogical Magazine, 25, 41-56
Rutherfordine
Formula: (UO2)CO3
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Rutile
Formula: TiO2
Localities: Reported from at least 12 localities in this region.
Reference: No reference listed
Rutile var:
Formula: Fex(Nb,Ta)2x · 4Ti1-xO2
Description: Inclusions in topaz.
Reference: Williamson, B.J., Stanley, C.J., and Wilkinson, J.J. (1997): Contributions to Mineralogy and Petrology 127, 119-128.
Rutile var:
Formula: (Ti,Ta,Fe)O2
Reference: No reference listed
Sabugalite ?
Formula: HAl(UO2)4(PO4)4 · 16H2O
Reference: Mineralogical Magazine 1965 34 : 159-176.
Sadanagaite
Formula: {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
Reference: Material from this locality has been renamed ferro-sadanagaite; Please do not reenter the old name here.
Safflorite
Formula: (Co,Ni,Fe)As2
Reference: Merry, M. & Weiß, S. (2017): Nickel- und Kobaltmineralien aus der St. Austell Consols Mine, Cornwall (GB). Lapis, 42 (1), 24-26; 39-40; 62 (in German).
'Sagenite'
Habit: typical sagenite growth
Colour: yellow
Reference: Jay I G Roland collection
Saléeite
Formula: Mg(UO2)2(PO4)2 · 10H2O
Description: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp. Without analytical validation.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
'Scapolite'
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
Scheelite
Formula: Ca(WO4)
Localities: Reported from at least 34 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007): Lapis 32 11), 13-25
Schmiederite
Formula: Pb2Cu2(Se6+O4)(Se4+O3)(OH)4
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 101 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.; Econ Geol (1995) 90:495-519; M. C. George, M. Stone, E. E. Fejer and R. F. Symes (1981). Triplite from the Megiliggar Rocks, Cornwall. Mineralogical Magazine 44:236-238
Schröckingerite
Formula: NaCa3(UO2)(CO3)3(SO4)F · 10H2O
Reference: Elton, N.J. and Hooper, J.J. (1992): Mineralogical Magazine, 56(1), 124-125.
Schulenbergite
Formula: (Cu,Zn)7(SO4)2(OH)10 · 3H2O
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 105 pp.
Scorodite
Formula: Fe3+AsO4 · 2H2O
Localities: Reported from at least 50 localities in this region.
Description: Some of the best examples of scorodite have come from this mine over the years, and looks set to produce further specimens when mining starts in 2012/13. Exceptional scorodite crystals have been found to about 1cm, more useul as blue to greenish druse of crystals lining cavitys to many cms in the quartz veinstone.
Reference: Mineralogical Record (2001) 32:249
Segnitite
Formula: PbFe3+3AsO4(AsO3OH)(OH)6
Reference: Paul De Bondt collection
Semseyite
Formula: Pb9Sb8S21
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Senarmontite
Formula: Sb2O3
Localities: Reported from at least 7 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Reference: Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 145
'Serpentine Subgroup var: '
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Description: Reported from the cliffs below the mine, where it encloses angular fragments of feldspar.
Reference: Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 146
Serpierite
Formula: Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Reference: Paul De Bondt collection
Shattuckite
Formula: Cu5(Si2O6)2(OH)2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Siderite
Formula: FeCO3
Localities: Reported from at least 200 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Siderite var:
Formula: FeCO3
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Sideronatrite
Formula: Na2Fe(SO4)2(OH) · 3H2O
Reference: NHM Collection, London (2009) - EDX analysis
Sieleckiite
Formula: Cu3Al4(PO4)2(OH)12 · 2H2O
Reference: M Rumsey & G Cressey (2010) The first confirmed British occurrence of sieleckiite. Russell Soc Jnl v13
'Silica'
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.
'Silica var: '
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.
Sillimanite
Formula: Al2(SiO4)O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Silver
Formula: Ag
Localities: Reported from at least 44 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Silver var:
Formula: (Ag,Sb), Sb < 5%
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386
Skutterudite
Formula: CoAs3
Localities: Reported from at least 26 localities in this region.
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
'Smectite Group' ?
Formula: A0.3D2-3[T4O10]Z2 · nH2O
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Smithsonite
Formula: ZnCO3
Description: Confirmed by EDAX
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
'Soapstone' ?
Description: Soapstone has been reported as occurring here by Phillips (1823), but Collins (1892) lists it with a question mark.
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Spangolite
Formula: Cu6Al(SO4)(OH)12Cl · 3H2O
Reference: BMS Database
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm; Mineralogical Magazine 1966 35 : 991-994.
Sphalerite
Formula: ZnS
Localities: Reported from at least 259 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Sphalerite var:
Formula: ZnS
Reference: Jay I. G. Roland collection
Sphalerite var:
Reference: Paul De Bondt collection
Spinel
Formula: MgAl2O4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Spodumene ?
Formula: LiAlSi2O6
Description: Erroneously reported by Kingsbury; see http://www.mindat.org/mesg-7-92300.html.
Reference: http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi; von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448 (referring to Kingsbury).
Stannite (TL)
Formula: Cu2FeSnS4
Localities: Reported from at least 29 localities in this region.
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.
Stannoidite
Formula: Cu+6Cu2+2(Fe2+,Zn)3Sn2S12
Reference: Dr. Kurt Greenwall collection (Dr. Werner H. Paar analyses)
Stephanite
Formula: Ag5SbS4
Reference: [Golley & Williams, 1995, 58 - "Cornish Mineral Reference Manual"; Dana 7:I:360.]
'Stibiconite'
Formula: Sb3+Sb5+2O6(OH)
Localities: Reported from at least 8 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Stibnite
Formula: Sb2S3
Localities: Reported from at least 28 localities in this region.
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Stilbite-Ca
Formula: NaCa4[Al9Si27O72] · nH2O
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm
'Stilbite subgroup'
Formula: (Na/Ca/K)6-7[Al8-9Si27-28O72] · nH2O
Reference: UKJMM 26:5-22
Stilpnomelane
Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Reference: Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines & Minerals, 20, 7-37. Betterton, J. (1997) Stilpnomelane from Penberthy Croft Mine, a Second Cornish Occurrence. UK Journal of Mines & Minerals, 18, 15.
Stokesite (TL)
Formula: CaSn[Si3O9] · 2H2O
Reference: Hutchinson, M.A. (1900): Mineralogical Magazine 12, 274-281
Stolzite
Formula: Pb(WO4)
Habit: Tabular
Colour: Buff
Reference: Green, D.I., Hubbard, N., and Jewson, C. (1996) Stolzite from two Cornish localities. UK Journal of Mines & Minerals, 16, 14.; Weiss, S., Green, D.H., Hooper, J.J., and Elton, N. (2007) Erzgänge und "alpine " klüfte: Die Mineralien des Hingston Quarry, Calstock, Cornwall. Lapis, 32 (11), 13-25.
Strashimirite
Formula: Cu8(AsO4)4(OH)4 · 5H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Strengite
Formula: FePO4 · 2H2O
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Strunzite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Reference: Ryback, G., and Tandy, P.C. (1992): Mineralogical Magazine 56, 261-275; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Sulphur
Formula: S8
Localities: Reported from at least 25 localities in this region.
Reference: Collection Richard De Nul
Svanbergite
Formula: SrAl3(PO4)(SO4)(OH)6
Reference: Embrey, P.G., and Symes, R.F. (1987): Minerals of Cornwall and Devon. British Museum of Natural History (London), p. 51
Synchysite-(Ce)
Formula: CaCe(CO3)2F
Reference: UKJMM Vol.29 p.49-52
Talc
Formula: Mg3Si4O10(OH)2
Localities: Reported from at least 10 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Talc var:
Formula: Mg3(Si4O10)(OH)2
Localities: Reported from at least 6 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Talmessite
Formula: Ca2Mg(AsO4)2 · 2H2O
Description: Found on the mine dump.
Reference: Braithwaite, R.S.W., et al., Journal of the Russell Society 6(2), 100-101(1996).
'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Tantalite-(Mn)
Formula: Mn2+Ta2O6
Reference: von Knorring, O., and Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, vol. 48, n° 348, 443-448.; Ryback, G., Nawaz, R. and Farley, E. (1988) Seventh Supplementary List of British Isles Minerals (Irish). Mineralogical Magazine, vol. 52, n° 365, pp. 267-274.
'Tavistockite'
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 105 pp.
'Tennantite'
Formula: Cu6(Cu4X2)As4S12S
Localities: Reported from at least 33 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Tennantite-Tetrahedrite Series'
Localities: Reported from at least 8 localities in this region.
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Tenorite
Formula: CuO
Localities: Reported from at least 77 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Tephroite
Formula: Mn2+2SiO4
Reference: No reference listed
'Tetrahedrite'
Formula: Cu6(Cu4X2)Sb4S13
Localities: Reported from at least 30 localities in this region.
Habit: Tetrahedrons to 2cm
Colour: coated with chalcopyrite
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Starkey, R. E. (2012) The Herodsfoot Mine, Lanreath, Cornwall, England. Mineralogical Record 43:411-486.
'Tetrahedrite var: '
Formula: (Cu,Ag)6[Cu4(Fe,Zn)2]Sb4S13
Reference: Grguric, B.A., and Nickel, E.H. (2006): UK Journal of Mines and Minerals 27, 39-40
'Thénardite'
Formula: Na2SO4
Reference: Ansermet, S. (2007): Lapis 32(2), 25-26, 50
Thorianite
Formula: ThO2
Reference: LeBoutillier, N. G., Shail, R. K., & Jewson, C. (2003). Monazite in polymetallic chlorite-(tourmaline)-quartz-(fluorite)-cassiterite-sulphide lodes and its potential for constraining the chronology of magmatic hydrothermal mineralisation in Cornwall.
Thorite
Formula: Th(SiO4)
Reference: LeBoutillier, N. G., Shail, R. K., & Jewson, C. (2003). Monazite in polymetallic chlorite-(tourmaline)-quartz-(fluorite)-cassiterite-sulphide lodes and its potential for constraining the chronology of magmatic hydrothermal mineralisation in Cornwall.
Tiemannite
Formula: HgSe
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; Econ Geol (1997) 92:468-484; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Titanite
Formula: CaTi(SiO4)O
Localities: Reported from at least 10 localities in this region.
Reference: Dale foster Collection
Titanite var:
Formula: CaTi(SiO4)O
Reference: Specimen given to the BMNH by A.W.G. Kingsbury (1958); Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177 (referring to Kingsbury);
Todorokite
Formula: (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Reference: UK Journal of Mines and Minerals (2007); UKJMM Vol.29 p.8
Topaz
Formula: Al2(SiO4)(F,OH)2
Localities: Reported from at least 31 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Localities: Reported from at least 45 localities in this region.
Reference: No reference listed
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Localities: Reported from at least 142 localities in this region.
Reference: No reference listed
'Tourmaline var: '
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities: Reported from at least 6 localities in this region.
Reference: [Golley & Williams, 1995 - "Cornish Mineral Reference Manual" 1]
'Tourmaline var: '
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Tourmaline var: '
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Localities: Reported from at least 9 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Tridymite
Formula: SiO2
Reference: [Golley & Williams, 1995, 63 - "Cornish Mineral Reference Manual"]
Triphylite
Formula: LiFe2+PO4
Reference: No reference listed
Triplite
Formula: Mn2+2(PO4)F
Reference: M. C. George, M. Stone, E. E. Fejer and R. F. Symes (1981). Triplite from the Megiliggar Rocks, Cornwall. Mineralogical Magazine 44:236-238
Triploidite
Formula: (Mn2+,Fe2+)2(PO4)(OH)
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Peter G. Embrey (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine 42:169-177
Tristramite (TL)
Formula: (Ca,U,Fe)(PO4,SO4) · 2H2O
Localities: Reported from at least 6 localities in this region.
Reference: Atkin, D., Basham, I.R., and Bowles, J.F.W. (1983): Mineralogical Magazine 47, 393-396
Trögerite
Formula: (H3O)(UO2)(AsO4) · 3H2O
Description: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp. Without analytical validation.
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Trüstedtite
Formula: Ni3Se4
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
'Tungstic Ochre'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Tungstite
Formula: WO3 · H2O
Reference: Rudler, F.W. (1905): A Handbook to a Collection of the Minerals of the British Islands, Mostly Selected from the Ludlam Collection. HMSO Publications (London), 241 pp.
Turquoise
Formula: Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Localities: Reported from at least 9 localities in this region.
Reference: [MinRec 12:350-352]
Turquoise var:
Formula: Cu(Al,Fe)6(PO4)4(OH)8 · 5H2O
Localities: Reported from at least 6 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Tyrolite
Formula: Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Tyrrellite
Formula: Cu(Co3+,Ni3+)2Se4
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
Tyuyamunite
Formula: Ca(UO2)2(VO4)2 · 5-8H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Ullmannite
Formula: NiSbS
Reference: UKJMM Vol.25 p.19; UKJMM Vol.29 p.49-52
'UM1995-//-CO:PbU'
Formula: Pb, U, C, O, H
Reference: Elton & Hooper (1995) J. Russ. Soc, 6, 17-26
'UM1995-CO-CaHREEEU'
Formula: Ca, REE, U, C, O, H
Reference: Elton & Hooper (1995) J. Russ. Soc, 6, 17-26
Umangite
Formula: Cu3Se2
Reference: [Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]; C. J. Stanley, A. J. Criddle and D. Lloyd (1990) Precious and Base Metal Selenide Mineralization at Hope's Nose, Torquay, Devon. Mineralogical Magazine 54:485-493
'Unnamed (Pd-Hg Selenide)'
Formula: Pd2HgSe3
Reference: W. H. Paar, A. C. Roberts, A. J. Criddle, D. Topa (1998): Mineralogical Magazine, 62, 257-264.
'Unnamed (Tetragonal Dimorph of Nadorite)'
Formula: PbSbO2Cl
Reference: S Rust Collection
Uraninite
Formula: UO2
Localities: Reported from at least 39 localities in this region.
Reference: Mineralogical Magazine 1965 34 : 159-176.
Uraninite var:
Formula: UO2
Localities: Reported from at least 29 localities in this region.
Reference: Mineralogical Magazine 1965 34 : 159-176.
Uraninite var:
Formula: UO2
Reference: Chris Popham specimens
Uranophane
Formula: Ca(UO2)2(SiO3OH)2•5H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Uranopilite
Formula: (UO2)6(SO4)O2(OH)6 · 14H2O
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Uranospathite (TL)
Formula: (Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
Type Locality:
Reference: [Embrey & Symes, 1987, 45 - "Minerals of Cornwall and Devon"]
Uranospinite
Formula: Ca(UO2)(AsO4)2 · 10H2O
Description: According to Golley & Williams (1995), XRD analyses of visually identified uranospinite specimens from Wheal Basset by N.J. Elton have shown them to be metatorbernite. Nonetheless, one specimen with mint-green crystals from the J.P. Gliddon collection (collected and sold to him labelled as uranospinite by R.W. Barstow) has been confirmed as uranospinite by XRD (P. Haas collection).
Reference: Golley, P. and Williams R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Valentinite
Formula: Sb2O3
Localities: Reported from at least 8 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Vanadinite
Formula: Pb5(VO4)3Cl
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Vandenbrandeite
Formula: Cu(UO2)(OH)4
Reference: Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Vandendriesscheite
Formula: PbU7O22 · 12H2O
Reference: [Journal of the Russell Society, 6(1), 17-26 (1995)]
Variscite
Formula: AlPO4 · 2H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Varlamoffite
Formula: (Sn,Fe)(O,OH)2
Localities: Reported from at least 13 localities in this region.
Reference: No reference listed
Vauquelinite
Formula: Pb2Cu(CrO4)(PO4)(OH)
Description: Sulphur yellow aggregates of minute lath-like crystals on malackite. Confirmed by a combination of XRD, EDAX and IR. Specimen held in the Manchester Museum collection, accession number N13067.
Reference: Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
Verbeekite
Formula: PdSe2
Reference: A.C. Roberts et al. (2002) Mineralogical Magazine 66, 173-179
Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Reference: http://www.mineralman.f9.co.uk/quarries/meldon.htm ; BMS Database
Vivianite (TL)
Formula: Fe2+3(PO4)2 · 8H2O
Localities: Reported from at least 14 localities in this region.
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386
Vochtenite (TL)
Formula: (Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2O
Type Locality:
Reference: Mineralogical Magazine 1989 53 : 473-478
Volborthite
Formula: Cu3(V2O7)(OH)2 · 2H2O
Colour: dark green; yellow-green
Description: dark-green rosettes and yellow-green balls up to 0.4 mm across associated with metazeunerite. It was found in spoil from the Second World War workings on Cliff Lode and identified by XRD at the Natural History Museum (film number 7107F).
Reference: Green, D.I., Hubbard, N., and Ince, F. (2008) A review of the occurrences of the copper vanadate minerals volborthite and tangeite in the British Isles. Journal of the Russell Society, vol. 11, 54-58.
'Wad'
Localities: Reported from at least 7 localities in this region.
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
'Wad var: '
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.
Wavellite (TL)
Formula: Al3(PO4)2(OH,F)3 · 5H2O
Localities: Reported from at least 13 localities in this region.
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 963; BMS Database
Waylandite
Formula: BiAl3(PO4)2(OH)6
Habit: Drusy crusts, pseudocubic crystals
Colour: Colourless, tan-brown
Reference: UKJMM No19 Tindle, A.G. (2008) Minerals of Britain and Ireland. Terra Publishing, Hemel Hempstead, Hertfordshire. 624pp.
Whitmoreite
Formula: Fe2+Fe3+2(PO4)2(OH)2 · 4H2O
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Wickmanite
Formula: Mn2+[Sn(OH)6]
Reference: Hubbard, N. (1989): Mineralogical Magazine 48, 388
Widenmannite
Formula: Pb2(OH)2[(UO2)(CO3)2]
Reference: [Journal of the Russell Society, 6(1), 17-26 (1995)]
Witherite
Formula: BaCO3
Reference: UKJMM Vol.29 p.49-52
Wittichenite
Formula: Cu3BiS3
Reference: Dr. Kurt Greenwall collection (Dr. Werner H. Paar analyses)
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Localities: Reported from at least 108 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Wollastonite
Formula: CaSiO3
Localities: Reported from at least 7 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Wölsendorfite
Formula: Pb7(UO2)14O19(OH)4 · 12H2O
Reference: [Journal of the Russell Society, 6(1), 17-26 (1995)]
Woodwardite
Formula: Cu1-xAlx(OH)2(SO4)x/2 · nH2O
Localities: Reported from at least 6 localities in this region.
Wroewolfeite
Formula: Cu4(SO4)(OH)6 · 2H2O
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Wulfenite
Formula: Pb(MoO4)
Localities: Reported from at least 10 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Wurtzite
Formula: (Zn,Fe)S
Localities: Reported from at least 6 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Xanthiosite
Formula: Ni3(AsO4)2
Description: Now considered as one of several occurrences that were falsified by Kingsbury.
Reference: Davis, R.J., Hey, M.H., and Kingsbury, A.W.G. (1965) Xanthiosite and aerugite. Mineralogical Magazine, vol. 35, n° 269, p. 72-83.; Embrey, P.G. (1978) Fourth supplementary list of British Minerals. Mineralogical Magazine, vol. 42, n° 322, p. 169-177. (referring to Kingsbury)
'Xenotime'
Reference: LeBoutillier, N. G., Shail, R. K., & Jewson, C. (2003). Monazite in polymetallic chlorite-(tourmaline)-quartz-(fluorite)-cassiterite-sulphide lodes and its potential for constraining the chronology of magmatic hydrothermal mineralisation in Cornwall.
Xenotime-(Y)
Formula: Y(PO4)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Zálesíite
Formula: CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
Reference: Golley & Williams, 1995, 2 - "Cornish Mineral Reference Manual"; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Zeunerite
Formula: Cu(UO2)2(AsO4)2 · 12H2O
Localities: Reported from at least 10 localities in this region.
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Zincolivenite
Formula: CuZn(AsO4)(OH)
Description: A review of British occurrences by Braithwaite et al (2009) shows that most of the material that has been reported as adamite is in fact zincolivenite, including the studied adamite from Penberthy Croft Mine. Journal of the Russell Society, 12, 10-14 (2009).
Reference: Braithwaite, R.S.W., Green, D.I., Tindle, A.G. (2009) The distribution and composition of adamite and zincolivenite in Britain and Ireland. Journal of the Russell Society, 12, 3–9.
Zinkenite
Formula: Pb9Sb22S42
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Zinnwaldite'
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Zippeite
Formula: K3(UO2)4(SO4)2O3(OH) · 3H2O
Localities: Reported from at least 11 localities in this region.
Reference: Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Zircon
Formula: Zr(SiO4)
Localities: Reported from at least 8 localities in this region.
Reference: LeBoutillier, N. G., Shail, R. K., & Jewson, C. (2003). Monazite in polymetallic chlorite-(tourmaline)-quartz-(fluorite)-cassiterite-sulphide lodes and its potential for constraining the chronology of magmatic hydrothermal mineralisation in Cornwall.
Zoisite
Formula: Ca2Al3[Si2O7][SiO4]O(OH)
Reference: No reference listed
Zwieselite
Formula: Fe2+2(PO4)F
Reference: No reference listed

Gallery: