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Eudidymite

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About EudidymiteHide

Formula:
Na2Be2Si6O15 · H2O
Colour:
White, colorless
Lustre:
Vitreous, Pearly
Hardness:
6
Specific Gravity:
2.55
Crystal System:
Monoclinic
Name:
From the Greek words for well and twinned, in allusion to its common occurrence in twins.
Dimorph of:
During his visit in the summer 1887 to Lille Arøya, Langesundsfjorden in Norway, the mineralogist Waldemar Christofer Brøgger (1851-1940) was shown an unknown mineral found by two local collectors. It was showed to be a new mineral and later described by Brøgger (1887, 1890).
The crystal structure was solved by Ito (1947) and Fang et al. (1972).

Note: The type localiyty, the island Lille Arøya, was called by Brøgger as Ober-Arö or Övre Arö. The contemporay correct name is Lille Arøya.


Classification of EudidymiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1887
9.DG.60

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
66.3.1.3

66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
3 : Amphiboles - Ca-Na subgroup
14.3.6

14 : Silicates not Containing Aluminum
3 : Silicates of Be

Physical Properties of EudidymiteHide

Vitreous, Pearly
Transparency:
Transparent, Translucent
Comment:
Pearly on cleavages
Colour:
White, colorless
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {001}, imperfect on{-551}
Density:
2.55 g/cm3 (Measured)    

Optical Data of EudidymiteHide

Type:
Biaxial (+)
RI values:
nα = 1.545 nβ = 1.546 nγ = 1.551
2V:
Measured: 30° , Calculated: 50°
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v distinct

Chemical Properties of EudidymiteHide

Formula:
Na2Be2Si6O15 · H2O
Common Impurities:
Al,Fe,Ca

Crystallography of EudidymiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 12.6188(10) Å, b = 7.3781(5) Å, c = 13.9940(9) Å
β = 103.762(5)°
Ratio:
a:b:c = 1.71 : 1 : 1.897
Unit Cell V:
1265.47 ų
Z:
4
Morphology:
Crystals tabular on (001), spherulitic, micaceous, coarse and granular,massive.
Twinning:
Twins on {001} common. V-shaped (Swallowtwins) twin

Crystallographic forms of EudidymiteHide

Crystal Atlas:
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Eudidymite no.10 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000043EudidymiteIto T (1947) The structure of eudidymite (HNaBeSi3O8) American Mineralogist 32 442-45319470293
0000293EudidymiteFang J H, Robinson P D, Ohya Y (1972) Redetermination of the crystal structure of eudidymite and its dimorphic relationship to epididymite American Mineralogist 57 1345-135419720293
0004615EudidymiteGatta G D, Rotiroti N, McIntyre G J, Guastoni A, Nestola F (2008) New insights into the crystal chemistry of epididymite and eudidymite from Malosa, Malawi: A single-crystal neutron diffraction study American Mineralogist 93 1158-11652008Malosa, Malawi0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
3.163 Å(10)
3.398Å(8)
3.074Å(8)
6.35Å(6)
2.999Å(6) 2.848
3.687Å(5)

Geological EnvironmentHide

Paragenetic Mode(s):

Type Occurrence of EudidymiteHide

General Appearance of Type Material:
Tabular crystals, usually twinned on {001}
Chemical Analysis of Type Material:
SiO273.11 %
BeO10.42 %
Na2O12.24 %
MgOtraces %
H2O3.79 %
Total:99.56 %
Geological Setting of Type Material:
Nepheline syenite
Associated Minerals at Type Locality:
Reference:
Brøgger, W.C. (1887). Om ”Eudidymit”, et nyt norsk mineral. Forelöbig meddelelse. Nyt Magazin for Naturvidenskaberne, 31, 196-199

Other Language Names for EudidymiteHide

German:Eudidymit
Simplified Chinese:双晶石
Spanish:Eudidymita
Traditional Chinese:雙晶石

Common AssociatesHide

Associated Minerals Based on Photo Data:
19 photos of Eudidymite associated with AegirineNaFe3+Si2O6
18 photos of Eudidymite associated with EpididymiteNa2Be2Si6O15 · H2O
9 photos of Eudidymite associated with Smoky QuartzSiO2
8 photos of Eudidymite associated with NatroliteNa2Al2Si3O10 · 2H2O
7 photos of Eudidymite associated with CalciteCaCO3
4 photos of Eudidymite associated with AlbiteNa(AlSi3O8)
4 photos of Eudidymite associated with MicroclineK(AlSi3O8)
4 photos of Eudidymite associated with DolomiteCaMg(CO3)2
3 photos of Eudidymite associated with AnalcimeNa(AlSi2O6) · H2O
3 photos of Eudidymite associated with PyriteFeS2

Related Minerals - Nickel-Strunz GroupingHide

9.DG.Barrydawsonite-(Y)Na1.5Y0.5CaSi3O8(OH)Mon. 2/m : P21/b
9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric.
9.DG.05PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05WollastoniteCaSiO3Tric. 1 : P1
9.DG.05Wollastonite-1ACaSiO3Tric. 1 : P1
9.DG.07CascanditeCaScSi3O8(OH)Tric. 1
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
9.DG.10Clinotobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Mon.
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
9.DG.10Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric.
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
9.DG.35XonotliteCa6(Si6O17)(OH)2Mon. 2/m
9.DG.40HillebranditeCa2(SiO3)(OH)2Orth. mmm (2/m 2/m 2/m) : Cmcm
9.DG.45ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2OOrth.
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2OOrth. 2 2 2 : C2 2 2
9.DG.55EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2OOrth.
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric.
9.DG.70LitidioniteCuNaKSi4O10Tric.
9.DG.70ManaksiteKNaMnSi4O10Tric.
9.DG.75TinaksiteK2Na(Ca,Mn2+)2TiO[Si7O18(OH)]Tric.
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.75SenkevichiteCsKNaCa2TiO[Si7O18](OH)Tric. 1 : P1
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4Mon.
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2OMon. m : Bm
9.DG.85MiseriteK1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2OTric.
9.DG.90FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2OTric.
9.DG.92Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2OMon. 2/m : P21/m
9.DG.95YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.
9.DG.97Eveslogite(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14Mon. 2/m : P2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

66.3.1.1XonotliteCa6(Si6O17)(OH)2Mon. 2/m
66.3.1.2ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2OOrth.
66.3.1.4EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
66.3.1.5YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.3.1PhenakiteBe2SiO4Trig. 3 : R3
14.3.2BertranditeBe4(Si2O7)(OH)2Orth. mm2 : Cmc21
14.3.3BerylliteBe3(SiO4)(OH)2 · H2OOrth.
14.3.4LiberiteLi2BeSiO4Mon. m : Pm
14.3.5ChkaloviteNa2BeSi2O6Orth. mm2 : Fdd2
14.3.7EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
14.3.8GugiaiteCa2Be(Si2O7)Tet.
14.3.9Jeffreyite(Ca,Na)2(Be,Al)(Si2O7,HSi2O7)Orth.
14.3.10Semenovite-(Ce)Na8Ca2FeBe6Ce2Si14O40(OH)4F4Orth. mmm (2/m 2/m 2/m)
14.3.11BaryliteBe2Ba(Si2O7)Orth.
14.3.12Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.13Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.14Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.15Minasgeraisite-(Y)CaBe2Y2Si2O10Tric. 1 : P1
14.3.16SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
14.3.17TrimeriteCaMn2+2Be3(SiO4)3Mon. 2/m : P21/m
14.3.18ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
14.3.19Tvedalite(Ca,Mn)4Be3Si6O17(OH)4 · 3H2OOrth.
14.3.20HarstigiteCa6(Mn,Mg)Be4Si6(O,OH)24Orth.
14.3.21SverigeiteNaMnMgSnBe2(SiO4)3(OH)Orth. mmm (2/m 2/m 2/m) : Imma
14.3.22Joesmithite{Pb}{Ca2}{Mg3Fe3+2}(Be2Si6O22)(OH)2Mon.
14.3.23Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
14.3.24Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10Mon. 2/m
14.3.25Calciogadolinite-(Y)(YCa)2Fe3+Be2[SiO4]2O2

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for EudidymiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Brøgger, W.C. (1887). Om ”Eudidymit”, et nyt norsk mineral. Forelöbig meddelelse. Nyt Magazin for Naturvidenskaberne 31, 196-199
Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. p 586-597
Flink, G. (1899): Über einige seltene Mineralien aus der Gegend von Langesund in Norwegen. Bulletin of the Geological Institution of the University of Uppsala 4, 16-27
Ito, T. (1947): The structure of Eudidymite (HNaBeSi3O8). American Mineralogist 32: 442-453
Fang, J.H., Robinson, P.D. & Ohya, Y. (1972): Redetermination of the crystal structure of eudidymite and its dimorphic relationship to epididymite. American Mineralogist 57, 1345-1354.
Gatta, D.G., N. Rotiroti, G.J.McIntyre, A. Guastoni, & F. Nestola (2008): New insights into the crystal chemistry of euididymite and eudidymite from Malosa, Malawi: A single-crystal neutron diffraction study: Am. Min. 93,1158-1165.
Larsen, A.O. (ed.) (2010) The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 pp.

Internet Links for EudidymiteHide

Localities for EudidymiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Brazil
 
  • Goiás
    • Arenópolis
Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Canada
 
  • Newfoundland and Labrador
    • Labrador
E. H. Nickel (1963): Eudidymite from Seal Lake, Labrador, Newfoundland. Can. Mineral. 7, 643-649. ; Nickel, E.H., J.F. Rowland, and D.J. Charette (1964) Niobophyllite - the niobium analogue of astrophyllite; a new mineral from Seal Lake, Labrador. Can. Mineral., 8, 40-52.
\"Rare Earth Element Mines, Deposits, and Occurrences,\" G.J. Orris and R.I. Grauch, Open File Report 02-189, U.S. Department of the Interior, U.S. Geological Survey, 2002.; GSC database locality No. 4100
Cámara, F., Sokolova, E., Hawthorne, F. C., Rowe, R., Grice, J. D., & Tait, K. T. (2013). Veblenite, K2〈 2Na (Fe2+ 5Fe3+ 4Mn2+ 7〈) Nb3Ti (Si2O7) 2 (Si8O22) 2O6 (OH) 10 (H2O) 3, a new mineral from Seal Lake, Newfoundland and Labrador: mineral description, crystal structure, and a new veblenite Si8O22 ribbon. Mineralogical Magazine, 77(7), 2955-2974.
A. Kerr (2010) Rare-earth-element (REE) mineralization in Labrador: A review of known environments and the geological context of current exploration activity. Newfoundland and Labrador Department of Natural Resources Current Research 2010 pp 109-143
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
GRICE, J.D. (1989) Mont Saint-Hilaire, Quebec: Canada's Most Diverse Mineral Locality. In: Famous mineral localities of Canada. Published by Fitzhenry & Whiteside Limited & the National Museum of Natural Sciences, 190 pages: 100-108; 166-175.; HORVÁTH, L., GAULT, R.A. (1990) The mineralogy of Mont Saint-Hilaire. Mineralogical Record, 21, 281-359.
Czech Republic
 
  • Vysočina Region
    • Žďár nad Sázavou District
      • Věžná
www.cseg.ca/conferences/2000/556.PDF.; Cerny, P., Novak, M., Chapman, R., & Masau, M. (2000). Subsolidus behavior of niobian rutile from Vezna, Czech Republic: A model for exsolutions in phases with Fe2+>> Fe3+. Journal of GEOsciences, 45(1-2), 21-35.; Cerny, P., Hawthorne, F. C., Laflamme, J. H. G., & Hinthorne, J. (1979). Stibiobetafite, a new member of the pyrochlore group from Vezna, Czechoslovakia. Canadian Mineralogist, 17, 583-588.
Petr Pauliš (2001): Nejzajímavější mineralogická naleziště Moravy a Slezska. Kuttna, Kutná Hora.; Canadian Mineralogist Vol.22, pp. 631-651 (1984)
Greenland
 
  • Kujalleq
    • Igaliku
      • Narsaarsuk Plateau
Bøgghild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3., C.A. Reitzels Forlag, Copenhagen. 445 p. (p.309)
    • Narsaq
Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, pp. 510.; Bohse, H., Petersen, O., Niedermayr, G. (2001): Notes on Leucophanite from the Ilimaussaq alkaline complex, South Greenland, Geology of Greenland Survey Bulletin, 190, 119-121
Malawi
 
  • Southern Region
    • Zomba
Cairncross, B., Messner, K & Farquharson, E. (1999): Die Pegmatite des Mount Malosa bei Zomba, Malawi. LAPIS 24 (4), 22-32; Diego Gatta, G., N. Rotiroti, G.J. McIntyre, A. Guastoni & F. Nestola (2008): New insights into the crystal chemistry of epididymite and eudidymite from Malosa, Malawi: A single-crystal neutron diffraction study. American Mineralogist 93, 1158-1165.; American Mineralogist, Volume 94, pages 1216–1222, 2009; Mineralogical Record (1997) 28:64
Norway
 
  • Telemark
    • Porsgrunn
      • Auenlandet
        • Sagåsen
Larsen, A.O. (1981): Boehmite from syenite pegmatites in the Oslo region, Norway. Mineralogical Record 12, 227-230
Larsen, A.O., Åsheim, A. and Gault, R. A. (2005): Minerals of the eudialyte group from the Sagåsen larvikite quarry, Porsgrunn, Norway. Norsk Bergverksmuseum Skrifter 30: 58-62
      • Langangen
Larsen, A. O. & Åsheim, A.(1976): Mineraler fra Langangen. NAGS-nytt 3(1),9-12.
Raade, G., Åmli, R., Mladeck, H., Din. V. K., Larsen, A.O. & Åsheim, A. (1983): Chiavennite from syenite pegmatites in the Oslo Region, Norway. American Mineralogist. 68: 628-633
      • Langesundsfjorden
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
        • Siktesøya
Larsen, A.O. & Raade, G. (1991): Gaidonnayite from the nepheline syenite pegmatite on Siktesøya in the southern part of the Oslo Region, norway. Norsk Geologisk Tidsskrift. 71: 303-306
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
  • Vestfold
    • Færder
      • Færder Islands
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p.; Andersen, F. (2017): Pegmatittganger og mineraler på Hoftøya og Langøya ved Færder i Ytre Vestfold. Norsk Mineralsymposium 2017: 69-75
    • Larvik
      • Hedrum
        • Lågendalen
Hansen,R.(1981): Mineralnotater. NAGS-nytt 8(4),18 (in norwegian)
Andersen, F. (1993): Hedrum pukkverk i Lågendalen. STEIN 20 (4), 236-238
RRUFF Project Specimen ID: R060063, Mindat-Photo id 311402
Naturhistoriska riksmuseet, Stockholm collection # 19130705
        • Lille Arøya
Brøgger, W.C. (1887). Om ”Eudidymit”, et nyt norsk mineral. Forelöbig meddelelse. Nyt Magazin for Naturvidenskaberne 31, 196-199; Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. p 586-597; Brøgger, W.C.(1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit- und Nephelinsyenite. Zeitschrift fur Kristallographie und Mineralogie, 16, 663 pp,
        • Vesle Arøya
Flink, G. (1899): Über einige seltene Mineralien aus der Gegend von Langesund in Norwegen. Bulletin of the Geological Institution of the University of Uppsala 4, 16-27; Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18 (1), 15-71; Larsen, A.O., Kolitsch, U., Gault, R.A. & Giester, G. (2010): Eirikite a new mineral species of the leifite group from the Langesundsfjord district, Norway. European Journal of Mineralogy. 22, 875–880
      • Malerød
Andersen, F., Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7(4), 21-100
      • Stavern (Fredriksvärn)
        • Jahren pegmatite (Jaren pegmatite)
Andresen, P., Friis, H., Kjærnet, T. & Larsen, A.O. (2018): The minerals of the Jahren pegmatite, one of the major pegmatites in the Larvik Plutonic Complex. Norsk Mineralsymposium 2018: 5-22.
Andresen, P., Friis, H., Kjærnet, T. & Larsen, A.o. (2018): The minerals of the Jahren pegmatite, one of the major pegmatites in the Larvik Plutonic Complex. Norsk Mineralsymposium 2018, 5-22.
      • Tvedalen
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Larsen, K.E. (2016): Noen funn av mineraler i Norge 2015-2016. Norsk Mineralsymposium 2016: 127-135
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
Nordrum, F. S. (2004): Nyfunn av mineraler i Norge 2003-2004. STEIN 31 (2), 36-44
        • Tuften (Tuften 1 Quarry; Tuften 2 Quarry)
Nordrum, F.S. (2008): Nyfunn av mineraler i Norge 2007-2008. STEIN 35 (2), 8-20; Andresen, P. (2013): Gedigent bly og andre spennende mineraler fra en unik pegmatitt i Tvedalen. Norsk Bergverksmuseum Skrifter. 50, 83-87
Ragnar Hansen & Svein A. Berge collection 1983; Engvoldsen,T.,Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18 (1),15-71
    • Sandefjord
      • Vesterøya
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p; Berge, S. A. (2013):Mineralene i Husebyyåsen feltspatbrudd, Vesterøya, Sandefjord. Norsk Bergverksmuseum Skrifter. 50, 93-99
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Pakistan
 
  • Khyber Pakhtunkhwa Province
    • Peshawar District
      • Hameed Abad Kafoor Dheri
The Mineralogical Record, Volume 35 Number 3, p. 212
Russia
 
  • Buryatia
    • Mama River Basin
      • Maigunda River
Vladykin, N. V., & Sotnikova, I. A. (2017). Petrology, geochemistry and source characteristics of the Burpala alkaline massif, North Baikal. Geoscience Frontiers, 8(4), 711-719.
  • Murmansk Oblast
    • Khibiny Massif
Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
        • Kirovskii apatite mine (Kirovsky Mine; Kirovskii Mine; Kirov Mine)
Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
    • Lovozersky District
      • Karnasurt Mountain
Pekov, I. V., Chukanov, N. V., Yamnova, N. A., Zadov, A. E., & Tarassoff, P. (2007). Gjerdingenite-Na and gjerdingenite-Ca, two new mineral species of the labuntsovite group. The Canadian Mineralogist, 45(3), 529-539
[World of Stones 95:5-6, p64]
Eur. J. Mineral 15,157-166 (2003)
  • Zabaykalsky Krai
    • Buriatia Republic (Buryatia)
      • Kizhinginsky District
Pavel M. Kartashov data
UK
 
  • England
    • Devon
      • West Devon
        • Okehampton Hamlets
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
 
矿物 and/or 产地  
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