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Dean Quarry, St Keverne, Cornwall, England, UKi
Regional Level Types
Dean QuarryQuarry
St KeverneCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Key
Latitude & Longitude (WGS84):
50° 2' 32'' North , 5° 4' 7'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW803204
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Coverack255 (2017)2.8km
Ruan Minor558 (2017)9.8km
Constantine819 (2017)11.4km
Gweek667 (2017)11.5km
Falmouth31,988 (2017)12.4km


Located about 1.5 km SE of St Keverne.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications.; 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.
Anorthite
Formula: Ca(Al2Si2O8)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Anorthite var: Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Calcite
Formula: CaCO3
Reference: Golley, P. and Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; 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.
'Chabazite'
Reference: [MinRec 20:395]; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Djurleite
Formula: Cu31S16
Reference: Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177.; Golley & Williams, 1996, 24 - "Cornish Mineral Reference Manual"
Enstatite
Formula: Mg2Si2O6
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Galena
Formula: PbS
Reference: No reference listed
'Gmelinite'
Reference: No reference listed
'Heulandite subgroup'
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Hornblende'
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Kerolite'
Formula: (Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Reference: Clay Minerals Bull. 32:241
'K Feldspar' ?
Reference: P Haas collection
'K Feldspar var: Adularia' ?
Formula: KAlSi3O8
Reference: P Haas collection
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Marcasite
Formula: FeS2
Reference: No reference listed
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Mottramite
Formula: PbCu(VO4)(OH)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Reference: Golley, P. and Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; 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.
Orthoclase
Formula: K(AlSi3O8)
Reference: No reference listed
Pectolite
Formula: NaCa2Si3O8(OH)
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: [Golley & Williams, 1995, 49 - "Cornish Mineral Reference Manual"]
Quartz
Formula: SiO2
Reference: No reference listed
Scolecite
Formula: CaAl2Si3O10 · 3H2O
Description: Wilson et al. (2008): "No XRD was carried out on this sample but calcium was shown to be present by chemical testing. The sample is in Plymouth Museum. Mindat, and Golley and Williams (1995), list scolecite at Dean Quarry but without a defining reference."
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications.; Wilson, O.M., Dyer, A., Holyer, V.A.D., and Williams, C.D. (2008) Scolecite from Cornwall, the first occurrences in England. Journal of the Russell Society, vol. 11, 87.
Stevensite
Formula: (Ca,Na)xMg3-x(Si4O10)(OH)2
Reference: [Golley & Williams, 1995, 58 - "Cornish Mineral Reference Manual"]
Stilbite-Ca
Formula: NaCa4[Al9Si27O72] · nH2O
Reference: No reference listed
'Stilbite subgroup'
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Volborthite ?
Formula: Cu3(V2O7)(OH)2 · 2H2O
Description: A mineral which is almost certainly volborthite occurs as minute yellow to yellow green spherules (up to about 0.3 mm across) in fractures in the rock. Insufficient material was available for analysis by XRD, but EDS produced a trace which is typical of volborthite. Identification can only be tentative without a confirmatory analysis by XRD, but the data is included in the hope that a detailed examination of further specimens will reveal sufficient material.
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.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Djurleite2.BA.05Cu31S16
Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Mottramite8.BH.40PbCu(VO4)(OH)
Volborthite ?8.FD.05Cu3(V2O7)(OH)2 · 2H2O
Group 9 - Silicates
Analcime9.GB.05Na(AlSi2O6) · H2O
Anorthite9.FA.35Ca(Al2Si2O8)
var: Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Enstatite9.DA.05Mg2Si2O6
Montmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Natrolite9.GA.05Na2Al2Si3O10 · 2H2O
Orthoclase9.FA.30K(AlSi3O8)
Pectolite9.DG.05NaCa2Si3O8(OH)
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Scolecite9.GA.05CaAl2Si3O10 · 3H2O
Stevensite9.EC.45(Ca,Na)xMg3-x(Si4O10)(OH)2
Stilbite-Ca9.GE.10NaCa4[Al9Si27O72] · nH2O
Unclassified Minerals, Rocks, etc.
'Chabazite'-
'Gmelinite'-
'Heulandite subgroup'-
'Hornblende'-
'K Feldspar' ?-
'var: Adularia' ?-KAlSi3O8
'Kerolite'-(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
'Stilbite subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Djurleite2.4.7.2Cu31S16
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
A3(XO4)2·xH2O
Volborthite ?40.3.10.1Cu3(V2O7)(OH)2 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Mottramite41.5.2.2PbCu(VO4)(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Enstatite65.1.2.1Mg2Si2O6
Single-Width Unbranched Chains, W=1 with chains P=3
Pectolite65.2.1.4aNaCa2Si3O8(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 clays
Montmorillonite71.3.1a.2(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Stevensite71.3.1b.6(Ca,Na)xMg3-x(Si4O10)(OH)2
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Orthoclase76.1.1.1K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Natrolite77.1.5.1Na2Al2Si3O10 · 2H2O
Scolecite77.1.5.5CaAl2Si3O10 · 3H2O
Stilbite-Ca77.1.4.3NaCa4[Al9Si27O72] · nH2O
Unclassified Minerals, Mixtures, etc.
Anorthite-Ca(Al2Si2O8)
var: Labradorite-(Ca,Na)[Al(Al,Si)Si2O8]
'Chabazite'-
'Gmelinite'-
'Heulandite subgroup'-
'Hornblende'-
'K Feldspar' ?-
'var: Adularia' ?-KAlSi3O8
'Kerolite'-(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
'Stilbite subgroup'-

List of minerals for each chemical element

HHydrogen
H AnalcimeNa(AlSi2O6) · H2O
H MottramitePbCu(VO4)(OH)
H Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
H NatroliteNa2Al2Si3O10 · 2H2O
H PectoliteNaCa2Si3O8(OH)
H PrehniteCa2Al2Si3O10(OH)2
H ScoleciteCaAl2Si3O10 · 3H2O
H Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
H Stilbite-CaNaCa4[Al9Si27O72] · nH2O
H Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
H VolborthiteCu3(V2O7)(OH)2 · 2H2O
CCarbon
C CalciteCaCO3
OOxygen
O AnalcimeNa(AlSi2O6) · H2O
O CalciteCaCO3
O EnstatiteMg2Si2O6
O Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
O MagnetiteFe2+Fe23+O4
O MottramitePbCu(VO4)(OH)
O Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
O NatroliteNa2Al2Si3O10 · 2H2O
O PectoliteNaCa2Si3O8(OH)
O PrehniteCa2Al2Si3O10(OH)2
O ScoleciteCaAl2Si3O10 · 3H2O
O Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
O Stilbite-CaNaCa4[Al9Si27O72] · nH2O
O OrthoclaseK(AlSi3O8)
O QuartzSiO2
O Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
O AnorthiteCa(Al2Si2O8)
O K Feldspar (var: Adularia)KAlSi3O8
O VolborthiteCu3(V2O7)(OH)2 · 2H2O
NaSodium
Na AnalcimeNa(AlSi2O6) · H2O
Na Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Na Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Na NatroliteNa2Al2Si3O10 · 2H2O
Na PectoliteNaCa2Si3O8(OH)
Na Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
Na Stilbite-CaNaCa4[Al9Si27O72] · nH2O
MgMagnesium
Mg EnstatiteMg2Si2O6
Mg Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mg Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
Mg Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
AlAluminium
Al AnalcimeNa(AlSi2O6) · H2O
Al Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Al Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Al NatroliteNa2Al2Si3O10 · 2H2O
Al PrehniteCa2Al2Si3O10(OH)2
Al ScoleciteCaAl2Si3O10 · 3H2O
Al Stilbite-CaNaCa4[Al9Si27O72] · nH2O
Al OrthoclaseK(AlSi3O8)
Al AnorthiteCa(Al2Si2O8)
Al K Feldspar (var: Adularia)KAlSi3O8
SiSilicon
Si AnalcimeNa(AlSi2O6) · H2O
Si EnstatiteMg2Si2O6
Si Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Si Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Si NatroliteNa2Al2Si3O10 · 2H2O
Si PectoliteNaCa2Si3O8(OH)
Si PrehniteCa2Al2Si3O10(OH)2
Si ScoleciteCaAl2Si3O10 · 3H2O
Si Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
Si Stilbite-CaNaCa4[Al9Si27O72] · nH2O
Si OrthoclaseK(AlSi3O8)
Si QuartzSiO2
Si Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Si AnorthiteCa(Al2Si2O8)
Si K Feldspar (var: Adularia)KAlSi3O8
SSulfur
S DjurleiteCu31S16
S GalenaPbS
S MarcasiteFeS2
KPotassium
K OrthoclaseK(AlSi3O8)
K K Feldspar (var: Adularia)KAlSi3O8
CaCalcium
Ca CalciteCaCO3
Ca Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Ca Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Ca PectoliteNaCa2Si3O8(OH)
Ca PrehniteCa2Al2Si3O10(OH)2
Ca ScoleciteCaAl2Si3O10 · 3H2O
Ca Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
Ca Stilbite-CaNaCa4[Al9Si27O72] · nH2O
Ca AnorthiteCa(Al2Si2O8)
VVanadium
V MottramitePbCu(VO4)(OH)
V VolborthiteCu3(V2O7)(OH)2 · 2H2O
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe MarcasiteFeS2
NiNickel
Ni Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
CuCopper
Cu DjurleiteCu31S16
Cu MottramitePbCu(VO4)(OH)
Cu VolborthiteCu3(V2O7)(OH)2 · 2H2O
PbLead
Pb MottramitePbCu(VO4)(OH)
Pb GalenaPbS

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
ⓘ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
ⓘ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
ⓘ Greisenization (latest age)~280 MaCornwall, England, UK
ⓘ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
ⓘ Formation of metallized pegmatites~285 MaCornwall, England, UK
ⓘ Greisenization (earliest age)~285 MaCornwall, England, UK
ⓘ Emplacement of major plutons~295 MaCornwall, England, UK

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
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.
Wilson, O.M., Dyer, A., Holyer, V.A.D., and Williams, C.D. (2008) Scolecite from Cornwall, the first occurrences in England. Journal of the Russell Society, vol. 11, 87.

Other Regions, Features and Areas containing this locality

British IslesGroup of Islands
Eurasian PlateTectonic Plate
UK

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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