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Eskebornite

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About EskeborniteHide

Formula:
CuFeSe2
Colour:
Brass yellow
Lustre:
Metallic
Hardness:
3 - 3½
Specific Gravity:
5.35
Crystal System:
Tetragonal
Name:
Named for the Eskeborn adit, Tilkerode, Germany, the type locality.

Classification of EskeborniteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1950
2.CB.10a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
2.9.1.2

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
3.1.33

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu

Physical Properties of EskeborniteHide

Metallic
Transparency:
Opaque
Colour:
Brass yellow
Comment:
Tarnishes dark brown to black
Streak:
Black
Hardness:
3 - 3½ on Mohs scale
Hardness:
VHN15=155 - 252 kg/mm2 - Vickers
Cleavage:
Perfect
on {001}
Density:
5.35 g/cm3 (Measured)    5.44 g/cm3 (Calculated)

Optical Data of EskeborniteHide

Anisotropism:
Marked - yellowish to tan
Colour in reflected light:
brown-yellow or cream-yellow sometimes with orange tint
Pleochroism:
Weak
Comments:
Creamy yellow to yellowish brown

Chemical Properties of EskeborniteHide

Formula:
CuFeSe2

Crystallography of EskeborniteHide

Crystal System:
Tetragonal
Morphology:
Thick tabular crystals to 1mm

Geological EnvironmentHide

Geological Setting:
Low temperature hydrothermal deposits

Type Occurrence of EskeborniteHide

Place of Conservation of Type Material:
Harvard University
Reference:
Ramdohr, P. (1950) Neue erzmineralien. Fortschritte der Mineralogie: 28: 69-70.

Other Language Names for EskeborniteHide

German:Eskebornit
Simplified Chinese:硒黄铜矿
Spanish:Eskebornita
Traditional Chinese:硒黃銅礦

Relationship of Eskebornite to other SpeciesHide

Other Members of this group:
ChalcopyriteCuFeS2Tet. 4 2m : I4 2d
GalliteCuGaS2Tet. 4 2m : I4 2d
LaforêtiteAgInS2Tet. 4 2m : I4 2d
LenaiteAgFeS2Tet. 4 2m : I4 2d
RoquesiteCuInS2Tet. 4 2m : I4 2d
ShenzhuangiteNiFeS2Tet. 4 2m : I4 2d
Unnamed (Cu-Mn-Sn Sulfide)Cu2MnSnS4
Forms a series with:

Common AssociatesHide

AnkeriteCa(Fe2+,Mg)(CO3)2
BerzelianiteCu2Se
ChalcopyriteCuFeS2
Chaméanite(Cu,Fe)4As(Se,S)4
ClausthalitePbSe
DolomiteCaMg(CO3)2
Geffroyite(Cu,Fe,Ag)9(Se,S)8
NaumanniteAg2Se
NaumanniteAg2Se
TiemanniteHgSe
UraniniteUO2
Associated Minerals Based on Photo Data:
3 photos of Eskebornite associated with Geffroyite(Cu,Fe,Ag)9(Se,S)8
3 photos of Eskebornite associated with UraniniteUO2
2 photos of Eskebornite associated with BerzelianiteCu2Se
2 photos of Eskebornite associated with BukoviteTl2(Cu,Fe)4Se4
2 photos of Eskebornite associated with UmangiteCu3Se2

Related Minerals - Nickel-Strunz GroupingHide

2.CB.AgmantiniteAg2MnSnS4Orth.
2.CB.05aColoradoiteHgTeIso. m3m (4/m 3 2/m)
2.CB.05aHawleyiteCdSIso. 4 3m : F4 3m
2.CB.05aMetacinnabarHgSIso. 4 3m : F4 3m
2.CB.05cPolhemusite(Zn,Hg)STet.
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4Iso.
2.CB.05aSphaleriteZnSIso. 4 3m : F4 3m
2.CB.05aStilleiteZnSeIso. 4 3m : F4 3m
2.CB.05aTiemanniteHgSeIso. 4 3m : F4 3m
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)SIso. 4 3m : F4 3m
2.CB.10aChalcopyriteCuFeS2Tet. 4 2m : I4 2d
2.CB.10aGalliteCuGaS2Tet. 4 2m : I4 2d
2.CB.10bHaycockiteCu4Fe5S8Orth. 2 2 2
2.CB.10aLenaiteAgFeS2Tet. 4 2m : I4 2d
2.CB.10bMooihoekiteCu9Fe9S16Tet.
2.CB.10bPutoraniteCu1.1Fe1.2S2Iso.
2.CB.10aRoquesiteCuInS2Tet. 4 2m : I4 2d
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m
2.CB.10aLaforêtiteAgInS2Tet. 4 2m : I4 2d
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4Tet. 4 2m : I4 2m
2.CB.15aFerrokësteriteCu2FeSnS4Tet. 4 : I4
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4Tet. 4 2m : I4 2m
2.CB.15aIdaiteCu5FeS6Hex.
2.CB.15aKësterite Cu2ZnSnS4Tet. 4 : I4
2.CB.15aKuramiteCu3SnS4Tet.
2.CB.15bMohiteCu2SnS3Mon.
2.CB.15aPirquitasiteAg2ZnSnS4Tet. 4 : I4
2.CB.15aStanniteCu2FeSnS4Tet. 4 2m : I4 2m
2.CB.15cStannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth.
2.CB.15aVelikiteCu2HgSnS4Tet.
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.20ChatkaliteCu6FeSn2S8Tet. 4 2m : P4m2
2.CB.20MawsoniteCu6Fe2SnS8Tet. 4 2m : P4m2
2.CB.30ColusiteCu13VAs3S16Iso. 4 3m : P4 3n
2.CB.30GermaniteCu13Fe2Ge2S16Iso. 4 3m : P4 3n
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32Iso.
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32Iso.
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16Iso.
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32Iso.
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32Iso. m3m (4/m 3 2/m)
2.CB.35aHemusiteCu6SnMoS8Iso.
2.CB.35aKiddcreekiteCu6SnWS8Iso. 4 3m : F4 3m
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4Iso.
2.CB.35aRenierite(Cu1+,Zn)11Fe4(Ge4+,As5+)2S16Tet. 4 2m : P4 2c
2.CB.35aVincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16Tet.
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4Iso.
2.CB.35bCatamarcaiteCu6GeWS8Hex. 6mm : P63mc
2.CB.40LautiteCuAsSOrth. mmm (2/m 2/m 2/m) : Pnma
2.CB.45CadmoseliteCdSeHex. 6mm : P63mc
2.CB.45GreenockiteCdSHex. 6mm : P63mc
2.CB.45Wurtzite(Zn,Fe)SHex. 6mm : P63mc
2.CB.45RambergiteMnSHex. 6mm : P63mc
2.CB.45Buseckite(Fe,Zn,Mn)SHex. 6mm : P63mc
2.CB.55aCubaniteCuFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.55bIsocubaniteCuFe2S3Iso. m3m (4/m 3 2/m) : Fm3m
2.CB.60PicotpauliteTlFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
2.CB.60RaguiniteTlFeS2Orth.
2.CB.65ArgentopyriteAgFe2S3Mon. 2/m
2.CB.65SternbergiteAgFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.70SulvaniteCu3VS4Iso.
2.CB.75VulcaniteCuTeOrth.
2.CB.80EmpressiteAgTeOrth. mmm (2/m 2/m 2/m)
2.CB.85MuthmanniteAuAgTe2Mon. 2/m : P2/m

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

2.9.1.1ChalcopyriteCuFeS2Tet. 4 2m : I4 2d
2.9.1.3GalliteCuGaS2Tet. 4 2m : I4 2d
2.9.1.4RoquesiteCuInS2Tet. 4 2m : I4 2d
2.9.1.5LenaiteAgFeS2Tet. 4 2m : I4 2d

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.1.1ChalcociteCu2SMon. 2/m : P21/b
3.1.2DjurleiteCu31S16Mon. 2/m
3.1.3DigeniteCu9S5Trig. 3m (3 2/m) : R3m
3.1.4AniliteCu7S4Orth. mmm (2/m 2/m 2/m) : Pnma
3.1.5RoxbyiteCu9S5Tric. 1 : P1
3.1.6SpionkopiteCu39S28Trig.
3.1.7GeeriteCu8S5Trig. 3
3.1.8CovelliteCuSHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.1.9BerzelianiteCu2SeIso. m3m (4/m 3 2/m) : Fm3m
3.1.10BellidoiteCu2SeTet. 4/m : P42/n
3.1.11UmangiteCu3Se2Tet.
3.1.12YarrowiteCu9S8Trig.
3.1.13AthabascaiteCu5Se4Orth.
3.1.14KlockmanniteCuSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.1.15Krut'aiteCuSe2Iso. m3 (2/m 3) : Pa3
3.1.16WeissiteCu2-xTeHex.
3.1.17RickarditeCu7Te5Orth.
3.1.18VulcaniteCuTeOrth.
3.1.19BambollaiteCu(Se,Te)2Tet.
3.1.20LautiteCuAsSOrth. mmm (2/m 2/m 2/m) : Pnma
3.1.21MgriiteCu3AsSe3Iso. m3m (4/m 3 2/m)
3.1.22CubaniteCuFe2S3Orth. mmm (2/m 2/m 2/m)
3.1.23BorniteCu5FeS4Orth. mmm (2/m 2/m 2/m) : Pbca
3.1.24FukuchiliteCu3FeS8Iso. m3 (2/m 3) : Pa3
3.1.25ChalcopyriteCuFeS2Tet. 4 2m : I4 2d
3.1.26MooihoekiteCu9Fe9S16Tet.
3.1.27HaycockiteCu4Fe5S8Orth. 2 2 2
3.1.28IsocubaniteCuFe2S3Iso. m3m (4/m 3 2/m) : Fm3m
3.1.29IdaiteCu5FeS6Hex.
3.1.30NukundamiteCu3.33Fe0.66S4Trig. 3m (3 2/m) : P3m1
3.1.31PutoraniteCu1.1Fe1.2S2Iso.
3.1.32Orickite2CuFeS2 · H2OHex.
3.1.34Chaméanite(Cu,Fe)4As(Se,S)4Iso.
3.1.35TalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m

Other InformationHide

Notes:
Distinctly magnetic
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 EskeborniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ramdohr, P. (1950) Neue erzmineralien. Fortschritte der Mineralogie: 28: 69-70.
Fleischer, M. (1954) New mineral names. American Mineralogist: 39: 690-692.
Tischendorf, G. (1960) Uber Eskebornit von Tilkerode im Harz. Neues Jahrbuch für Mineralogie - Abhandlungen: 94 (Ramdohr Festband): 1169-1182.
Fleischer, M. (1961) New mineral names. American Mineralogist: 46: 464-468.
Harris, D.C., Burke, E.A.J. (1971) Eskebornite, two Canadian Occurrences. The Canadian Mineralogist: 10: 787-796.
Fleischer, M. (1972) New mineral names. American Mineralogist: 57: 1552-1561.
Kvaček, M. (1973) Selenides from the uranium deposits of western Moravia, Czechoslovakia. Part 1. Berzelianite, umangite, eskebornite. Acta Universitatis Carolinae, Geologica: 1-2: 23–36.
Johan, Z. (1988) Crystal symmetry of eskebornite, Cu-FeSe2. Neues Jahrbuch für Mineralogie - Monatshefte: 337-343.
Jambor, J.L., Burke, E.A.J. (1989) New mineral names. American Mineralogist: 74: 1399-1404.
Delgado, J.M., Diaz De Delgado, G., Quintero, M., and Wooley, J.C. (1992) The crystal structure of copper iron selenide, CuFeSe2. Materials Research Bulletin: 27(3): 367-373.
Dorofeev, Yu.A., Men'shikov, A.Z., Pleshchëv, V. G. (1994) Crystal and magnetic structure of eskebornite CeFeSe2. Physics of the Solid State: 36(8): 1329-1332.
Tinoco, T., Polian, A., Itie, J.P., Grima, P., Moya, E., San Miguel, A., Gonzalez, J., Gonzalez-Jimenez, F. (1996) Structural studies on CuFeSe2 (eskebornite) under high pressure. High Pressure Science and Technology, Proc. Jt. XV AIRAPT XXXIII EHPRG Int. Conf., W.A. Trzeciakowski, ed., World Scientific, Singapore: 445-447.

Internet Links for EskeborniteHide

Localities for EskeborniteHide

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.
Argentina
 
  • La Rioja Province
    • General Lamadrid department
      • Villa Castelli
        • Sierra de Cacho
Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); de Brodtkorb, M. K., & Crosta, S. (2010). Reseña de la ubicación geográfica de los seleniuros de la Sierra de Umango, provincia de La Rioja. Revista de la Asociación Geológica Argentina, 67(2), 272-279.; Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.; Paar, W.H., Topa, D., Roberts, A.C., Criddle, A.J., Amann, G., Sureda, R.J. (2002): The new mineral species brodtkorbite, Cu2HgSe2, and the associated selenide assemblage from Tumiñico, Sierra de Cacho, La Rioja, Argentina. Can. Mineral.: 40(1): 225–237
Recursos Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325; de Brodtkorb, M. K.; Gay, H. D.; Sureda, R. J. (1993): Polymetallic selenide-sulfide minerals of the Los Llantenes mining district, La Rioja, Argentina. Maurice, Yvon T. (Ed.), Proc. 8th Quadrenn. IAGOD Symp., 119-125.
  • Mendoza Province
    • Luján de Cuyo department
      • Cacheuta
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
Australia
 
  • Northern Territory
    • West Arnhem Region
      • South Alligator River
        • Rockhole area
Rajesh, H.M. (2008): Ore Geology Reviews 33, 382-396.
Bolivia
 
  • Potosí
    • Antonio Quijarro Province
[MinRec 21:133]; Grundmann, G. and Förster H.-J. (2017) Origin of the El Dragón Selenium Mineralization, Quijarro Province, Potosí, Bolivia. Minerals, 7(5), 68; doi:10.3390/min7050068
Bulgaria
 
  • Haskovo Province
    • Ivaylovgrad Municipality
      • Ivaylovgrad
T. Kerestedjian (1997) Argentonentlandite (Fe, Ni)8+хАg1-xS8 from Kamilski dol – a new mineral species for Bulgaria. Review of the Bulgarian Geological Society 58:15-18
Canada
 
  • Saskatchewan
    • Beaverlodge Lake area
Can Min 10:787-796
Econ Geol (1997) 92:468-484; Canadian Mineralogist Vol. 10, pp.787-796 (1972)
China
 
  • Hubei
    • Enshi Autonomous Prefecture (E'xi Autonomous Prefecture)
      • Enshi Co.
Caixia Feng, Jiajun Liu, and Shen Liu (2002): Mineral Deposits 21(suppl.), 812-815; Hanjie Wen, Carignan, J., Yuzhuo Qiu, and Shirong Liu (2006): Environmental Science and Technology 40(4), 1126-1132
Czech Republic
 
  • Central Bohemian Region
Škácha, P., Sejkora, J., & Plášil, J. (2017). Selenide mineralization in the Příbram uranium and base-metal district (Czech Republic). Minerals, 7(6), 91.
  • Plzeň Region
    • Plzeň-South District
      • Spálené Poříčí
Scharm, B. & Scharmová, M. (2000) Accessory minerals of siliceous rocks from the Kokšín hill near Mítov (Barrandian Neoproterozoic). Bulletin of Geosciences, 75(3), 307-318.
    • Tachov District
      • Planá u Mariánských Lázní
Scharmová, M., Scharm, B.: Minerály selenu na uranovém ložisku Zadní Chodov. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 43-47.
  • South Bohemian Region
    • Písek District
      • Kovářov
        • Předbořice
Strübel, Zimmer: "Lexikon der Minerale", 2nd Ed., 1991; Econ Geol (1997) 92:468-484; Bindi, L., Förster, H. J., Grundmann, G., Keutsch, F., & Stanley, C. (2016). Petříčekite, CuSe2, a New Member of the Marcasite Group from the Předbořice Deposit, Central Bohemia Region, Czech Republic. Minerals, 6(2), 33.
  • Vysočina Region
    • Žďár nad Sázavou District
      • Nové Město na Moravě
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38. ; Econ Geol (1997) 92:468-484
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38.
      • Rožná
        • Rožná deposit
Vavřín, I.: Nové poznatky o selenidech Českého masívu. Bulletin Mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 82-89. ; Econ Geol (1997) 92:468-484
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38. ; Econ Geol (1997) 92:468-484
Vavřín, I.: Nové poznatky o selenidech Českého masívu. Bulletin Mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 82-89.
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38.
France
 
  • Auvergne-Rhône-Alpes
    • Puy-de-Dôme
      • Le Vernet-Chaméane
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Econ Geol (1997) 92:468-484
Germany
 
  • Lower Saxony
    • Goslar district
      • Clausthal-Zellerfeld
Cabral, A. R., van den Kerkhof, A. M., Sosa, G. M., Nolte, N., Ließmann, W., & Lehmann, B. (2018). Clausthalite (PbSe) and tiemannite (HgSe) from the type locality: New observations and implications for metallogenesis in the Harz Mountains, Germany. Ore Geology Reviews, 102, 728-739.
    • Göttingen district
      • Osterode am Harz
        • Lerbach
Weiss, S. (1990) Mineralfundstellen Atlas, Deutschland West. Weise Verlag, München, 320 pages.
  • Saxony-Anhalt
    • Harz
      • Tilkerode (Abberode)
NJMM (1988), 337
    • Mansfeld Basin
      • Mansfeld
Tischendorf, G. (1969). Sources of elements in selenide mineralization near Tilkerode (Harz). International Geology Review, 11(11), 1298-1301.
  • Saxony
    • Erzgebirgskreis
      • Aue-Bad Schlema
Förster, H. J. (2004). Mineralogy of the Niederschlema-Alberoda U–Se-polymetallic deposit, Erzgebirge, Germany. II: Hessite, Ag2Te, and native Te (?), the first tellurium minerals. Neues Jahrbuch für Mineralogie-Abhandlungen: Journal of Mineralogy and Geochemistry, 180(2), 101-113.
          • Shaft 366
The Canadian Mineralogist, V 42, 2004, pp. 1719-1732.
Poland
 
  • Lower Silesian Voivodeship
    • Kłodzko County
      • Gmina Stronie Śląskie
Econ Geol (1997) 92:468-484; Pringle, G. J., & Thorpe, R. I. (1980). Bohdanowiczite, junoite and laitakarite from the Kidd Creek mine, Timmins, Ontario. The Canadian Mineralogist, 18(3), 353-360.; Gil, G.; Gunia, P.; Barnes, J.D.; Szymański, M.; Jokubauskas, P.; Kalbarczyk-Gil, A.; Bagiński, B. (2020) Origin of Talc and Fe-Ti-V Mineralization in the Kletno Deposit (the Śnieżnik Massif, SW Poland). Minerals 10, 13.
USA
 
  • Colorado
    • Garfield Co.
      • East Rifle Creek area
Minerals of Colorado (1997) Eckel, E. B.
Minerals of Colorado (1997) Eckel, E. B.
  • Nevada
    • Elko Co.
NBMG Spec. Pub. 31 Minerals of Nevada
Tharalson, E.R.; Monecke, T.; Reynolds, T.J.; Zeeck, L.; Pfaff, K.; Kelly, N.M. (2019) The Distribution of Precious Metals in High-Grade Banded Quartz Veins from Low-Sulfidation Epithermal Deposits: Constraints from µXRF Mapping. Minerals 9, 740.
 
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