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Omeiite

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01537900015029757893730.jpg
Mount Emei
Formula:
(Os,Ru)As2
Colour:
Dull steel gray
Lustre:
Metallic
Hardness:
7
Crystal System:
Orthorhombic
Name:
For Mount Omei (Mount Emei) (in standard Chinese phonetics "Emei", or "Emeishan"), after which the igneous province was named in which the type locality is situated.
Hide all sections | Show all sections

Classification of OmeiiteHide

Approved
First Published:
1978
2.EB.15a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
2.12.2.7

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.12.58

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

Physical Properties of OmeiiteHide

Metallic
Transparency:
Opaque
Colour:
Dull steel gray
Hardness:
Tenacity:
Brittle

Chemical Properties of OmeiiteHide

Formula:
(Os,Ru)As2
IMA Formula:
OsAs2
Common Impurities:
Ir,Ni,Fe,Co

Crystallography of OmeiiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 5.4 Å, b = 6.16 Å, c = 3.02 Å
Ratio:
a:b:c = 0.877 : 1 : 0.49
Unit Cell V:
100.46 ų (Calculated from Unit Cell)

Type Occurrence of OmeiiteHide

Place of Conservation of Type Material:
Museum of Geology, National Bureau of Geology
Reference:
Ren, Y., Hu, Q., Xu, J. (1978) A preliminary study of the new mineral of platinum group - Omeiite OsAs2. Acta Geologica Sinica: 52(2): 163-167

Other Language Names for OmeiiteHide

German:Omeiit
Russian:Омейит
Simplified Chinese:峨眉矿
砷锇矿
Spanish:Omeiita

Relationship of Omeiite to other SpeciesHide

Other Members of this group:
AlloclasiteCo1-xFexAsSMon. 2 : P21
Anduoite(Ru,Os)As2Orth.
ClinosaffloriteCoAs2Mon. 2/m : P21/m
CostibiteCoSbSOrth. mm2 : Pmn21
LöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
NisbiteNiSb2Orth.
OeniteCoSbAsOrth.
ParacostibiteCoSbSOrth.
PararammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pbca
RammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
Safflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
Unnamed (Fe-Ni Antimonide Arsenide)(Fe,Ni)SbAs
Forms a series with:

Related Minerals - Nickel-Strunz GroupingHide

2.EB.05aAurostibiteAuSb2Iso. m3 (2/m 3) : Pa3
2.EB.05bBambollaiteCu(Se,Te)2Tet.
2.EB.05aCattieriteCoS2Iso. m3 (2/m 3) : Pa3
2.EB.05aErlichmaniteOsS2Iso. m3 (2/m 3) : Pa3
2.EB.05aFukuchiliteCu3FeS8Iso. m3 (2/m 3) : Pa3
2.EB.05aGeversitePtSb2Iso. m3 (2/m 3) : Pa3
2.EB.05aHaueriteMnS2Iso. m3 (2/m 3) : Pa3
2.EB.05aInsizwaitePt(Bi,Sb)2
2.EB.05aKrut'aiteCuSe2Iso. m3 (2/m 3) : Pa3
2.EB.05aLauriteRuS2Iso. m3 (2/m 3) : Pa3
2.EB.05aPenroseite(Ni,Co,Cu)Se2Iso. m3 (2/m 3) : Pa3
2.EB.05aPyriteFeS2Iso. m3 (2/m 3) : Pa3
2.EB.05aSperrylitePtAs2Iso. m3 (2/m 3) : Pa3
2.EB.05aTrogtaliteCoSe2
2.EB.05aVaesiteNiS2Iso. m3 (2/m 3) : Pa3
2.EB.05aVillamaninite(Cu,Ni,Co,Fe)S2
2.EB.05aDzharkeniteFeSe2Iso. m3 (2/m 3) : Pa3
2.EB.05aGaotaiiteIr3Te8Iso.
2.EB.10bAlloclasiteCo1-xFexAsSMon. 2 : P21
2.EB.10dCostibiteCoSbSOrth. mm2 : Pmn21
2.EB.10aFerroseliteFeSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aFrohbergiteFeTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10cGlaucodot(Co0.50Fe0.50)AsSOrth. mm2 : Pmn21
2.EB.10aKulleruditeNiSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aMarcasiteFeS2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aMattagamiteCoTe2Orth.
2.EB.10eParacostibiteCoSbSOrth.
2.EB.10ePararammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pbca
2.EB.10fOeniteCoSbAsOrth.
2.EB.15aAnduoite(Ru,Os)As2Orth.
2.EB.15aClinosaffloriteCoAs2Mon. 2/m : P21/m
2.EB.15aLöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aNisbiteNiSb2Orth.
2.EB.15cPaxiteCuAs2Mon.
2.EB.15aRammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aSafflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15bSeinäjokite(Fe,Ni)(Sb,As)2Orth.
2.EB.20ArsenopyriteFeAsSMon. 2/m : P21/b
2.EB.20GudmunditeFeSbSMon. 2/m : P21/b
2.EB.20Osarsite(Os,Ru)AsSMon.
2.EB.20Ruarsite(Ru,Os)AsSMon.
2.EB.25CobaltiteCoAsSOrth. mm2 : Pca21
2.EB.25GersdorffiteNiAsSIso. m3 (2/m 3) : Pa3
2.EB.25Hollingworthite(Rh,Pt,Pd)AsSIso. m3 (2/m 3)
2.EB.25Irarsite(Ir,Ru,Rh,Pt)AsSIso.
2.EB.25JolliffeiteNiAsSeIso. m3 (2/m 3) : Pa3
2.EB.25KrutoviteNiAs2Iso.
2.EB.25MaslovitePtBiTeIso. 2 3 : P21 3
2.EB.25MicheneritePdBiTeIso. 2 3 : P21 3
2.EB.25PadmaitePdBiSeIso.
2.EB.25PlatarsitePtAsSIso.
2.EB.25TestibiopalladitePdTe(Sb,Te)Iso.
2.EB.25TolovkiteIrSbSIso.
2.EB.25UllmanniteNiSbSIso. 2 3 : P21 3
2.EB.25WillyamiteCoSbS
2.EB.25ChangchengiteIrBiSIso.
2.EB.25MayingiteIrBiTeIso. m3 (2/m 3) : Pa3
2.EB.25Hollingsworthite(Rh,Pt,Pd)AsS
2.EB.25KalungaitePdAsSeIso. m3 (2/m 3) : Pa3
2.EB.25MilotaitePdSbSeIso. 2 3 : P21 3
2.EB.30UrvantsevitePd(Bi,Pb)2Tet.
2.EB.35RheniiteReS2Tric.

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

2.12.2.1MarcasiteFeS2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.2FerroseliteFeSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.3FrohbergiteFeTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.5MattagamiteCoTe2Orth.
2.12.2.6KulleruditeNiSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.8Anduoite(Ru,Os)As2Orth.
2.12.2.9LöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.10Seinäjokite(Fe,Ni)(Sb,As)2Orth.
2.12.2.11Safflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.12RammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.13NisbiteNiSb2Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.12.1Seinäjokite(Fe,Ni)(Sb,As)2Orth.
3.12.2LauriteRuS2Iso. m3 (2/m 3) : Pa3
3.12.3Ruthenarsenite(Ru,Ni)AsOrth.
3.12.4Anduoite(Ru,Os)As2Orth.
3.12.5Ruarsite(Ru,Os)AsSMon.
3.12.6XingzhongitePb2+Ir3+2S4Iso.
3.12.7RhodplumsiteRh3Pb2S2Trig.
3.12.8Cuprorhodsite(Cu1+0.5Fe3+0.5)Rh3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
3.12.9KonderiteCu3Pb(Rh,Pt,Ir)8S16Hex. 6/m : P6/m
3.12.10Bowieite(Rh,Ir,Pt)2S3Orth. mmm (2/m 2/m 2/m)
3.12.11CherepanoviteRhAsOrth. mmm (2/m 2/m 2/m) : Pnma
3.12.12Hollingworthite(Rh,Pt,Pd)AsSIso. m3 (2/m 3)
3.12.13Vysotskite(Pd,Ni)STet.
3.12.14Vasilite(Pd,Cu)16(S,Te)7
3.12.15PalladseitePd17Se15Iso. m3m (4/m 3 2/m)
3.12.16Oosterboschite(Pd,Cu)7Se5Orth.
3.12.17TelluropalladinitePd9Te4Mon.
3.12.18TemagamitePd3HgTe3Trig. 3m : P3m1
3.12.19SopcheiteAg4Pd3Te4Orth.
3.12.20MicheneritePdBiTeIso. 2 3 : P21 3
3.12.21KotulskitePd(Te,Bi)Hex.
3.12.22Telargpalite(Pd,Ag)3(Te,Bi)Iso.
3.12.23Merenskyite(Pd,Pt)(Te,Bi)2Trig. 3m : P3m1
3.12.24PalladoarsenidePd2AsMon. 2/m : P2/m
3.12.25StillwateritePd8As3Trig.
3.12.26AtheneitePd2As0.75Hg0.25Hex. 6 m2 : P62m
3.12.27MajakitePdNiAsHex.
3.12.28PalarstanidePd5(Sn,As)2Hex.
3.12.29ArsenopalladinitePd8(As,Sb)3Tric. 1 : P1
3.12.30VincentitePd3AsTet.
3.12.31PalladobismutharsenidePd2(As,Bi)Orth.
3.12.32StibiopalladinitePd5Sb2Hex.
3.12.33Hexatestibiopanickelite(Pd,Ni)(Sb,Te)Hex.
3.12.34Sudburyite(Pd,Ni)SbHex.
3.12.35TestibiopalladitePdTe(Sb,Te)Iso.
3.12.36BorovskitePd3SbTe4Iso.
3.12.37IsomertieitePd11Sb2As2Iso. m3m (4/m 3 2/m) : Fd3m
3.12.38Mertieite-IPd11(Sb,As)4Hex.
3.12.39Mertieite-IIPd8Sb2.5As0.5Trig. 3m (3 2/m) : R3c
3.12.40SobolevskitePd(Bi,Te)Hex.
3.12.41Frooditeα-PdBi2Mon. 2/m : B2/m
3.12.42PolaritePd(Bi,Pb)Orth. mm2 : Cmc21
3.12.43UrvantsevitePd(Bi,Pb)2Tet.
3.12.44CooperitePtSTet. 4/mmm (4/m 2/m 2/m) : P42/mmc
3.12.45Braggite(Pt,Pd,Ni)STet.
3.12.46Kharaelakhite(Cu,Pt,Pb,Fe,Ni)9S8Orth. mmm (2/m 2/m 2/m) : Pmmm
3.12.47MalaniteCu1+(Ir3+Pt4+)S4Iso.
3.12.48Moncheite(Pt,Pd)(Te,Bi)2Trig.
3.12.49MaslovitePtBiTeIso. 2 3 : P21 3
3.12.50SperrylitePtAs2Iso. m3 (2/m 3) : Pa3
3.12.51PlatarsitePtAsSIso.
3.12.52GeversitePtSb2Iso. m3 (2/m 3) : Pa3
3.12.53DaomaniteCuPtAsS2Orth.
3.12.54Genkinite(Pt,Pd,Rh)4Sb3Tet. 4 2 2
3.12.55StumpflitePt(Sb,Bi)Hex.
3.12.56InsizwaitePt(Bi,Sb)2
3.12.57ErlichmaniteOsS2Iso. m3 (2/m 3) : Pa3
3.12.59Osarsite(Os,Ru)AsSMon.
3.12.60Kashinite(Ir,Rh)2S3Orth.
3.12.61InaglyiteCu3Pb(Ir,Pt)8S16Hex.
3.12.62Cuproiridsite(Cu,Fe)Ir2S4Iso. m3m (4/m 3 2/m) : Fd3m
3.12.63Iridarsenite(Ir,Ru)As2Mon.
3.12.64Irarsite(Ir,Ru,Rh,Pt)AsSIso.
3.12.65TolovkiteIrSbSIso.

Other InformationHide

Notes:
Insoluble in HCl and HN03 and dissolves with difficulty in aqua regia.
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 OmeiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Holseth, H., Kjekshus, A. (1968) Compounds with the marcasite type crystal structure. I. Compositions of the binary pnictides. Acta Chemica Scandinavica: 22: 3273-3283.
Kjekshus, A., Rakke, T., Andresen, A.F. (1977) Compounds with the marcasite type crystal structure. XII. Structural data for RuP2, RuAs2, RuSb2, OsP2, OsAs2, OsSb2. Acta Chemica Scandinavica: A31: 253-259.
Ren, Y., Hu, Q., Xu, J. (1978) A preliminary study of the new mineral of platinum group - Omeiite OsAs2. Acta Geologica Sinica: 52(2): 163-167. [in Chinese with English abstract]
Chao, G.Y. (1979) New mineral names. American Mineralogist: 64: 464.

Internet Links for OmeiiteHide

Localities for OmeiiteHide

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
 
  • Minas Gerais
The Canadian Mineralogist; August 2007; v. 45; no. 4; p. 751-773;
Marchetto (1990) Econ Geol 85:921-927
China (TL)
 
  • Sichuan
    • Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture)
      • Danba Co.
        • Yangliuping Cu-Ni-PGE ore field
Ren Yingxin, Hu Qinde, and Xu Jingao (1978): Acta Geologica Sinica 52(2), 163-167; Dunn, P.J., Chao, G.Y., Grice, J.D, Ferraiolo, J.A., Fleischer, M., Pabst, A., and Zilczer, J.A. (1985): American Mineralogist 69, 565-569; Xiaoqiang Hu, Yunquan Li, and Dequan Shuai (2001): Journal of Mineralogy and Petrology 21(1), 14-18; Song, X. Y., Zhou, M. F., & Cao, Z. M. (2004): The Canadian Mineralogist 42(2), 469-483
Greece
 
  • Epirus
    • Pindos Mtn
      • Pindos ophiolite complex
Argirios Kapsiotis, Tassos A. Grammatikopoulos, Basilios Tsikouras, Konstantin Hatzipanagiotou, Federica Zaccarini und Giorgio Garuti (2011): Mineralogy, composition and PGM of chromitites from Pefki, Pindos ophiolite complex (NW Greece): evidence for progressively elevated fAs conditions in the upper mantle sequence. Mineralogy and Petrology 101, 129-150.
Kazakhstan
 
  • Aktobe Region
    • Kargaly
Melcher, F., Grum, W., Simon, G., Thalhammer, T.V., Stumpfl, E.F. (1997): Petrogenesis of the Ophiolitic Giant Chromite Deposits of Kempirsai, Kazakhstan: a Study of Solid and Fluid Inclusions in Chromite. J Petrol.: 38(10), 1419–1458; https://doi.org/10.1093/petroj/38.10.1419
Russia
 
  • Irkutsk Oblast
Kolotilina, T. B., Mekhonoshin, A. S., & Orsoev, D. A. (2019). Re Sulfides from Zhelos and Tokty-Oi Intrusions (East Sayan, Russia). Minerals, 9(8), 479.
    • Uda–Biryusa district
Shvedov, G. I., & Barkov, A. Y. (2017). Primary and alteration assemblages of platinum-group minerals from the Ognit complex, Irkutskaya oblast, Eastern Sayans, Russia. Neues Jahrbuch für Mineralogie-Abhandlungen: Journal of Mineralogy and Geochemistry, 194(1), 35-48.
Podlipsky, M. Y., Mekhonoshin, A. S., Tolstykh, N. D., Vishnevskiy, A. V., & Polyakov, G. V. (2015). Mineralogy and geochemistry of the Tartai massif, East Siberian metallogenic province. Geology of Ore Deposits, 57(3), 172-196.
Kolotilina, T. B., Mekhonoshin, A. S., & Orsoev, D. A. (2019). Re Sulfides from Zhelos and Tokty-Oi Intrusions (East Sayan, Russia). Minerals, 9(8), 479.
Ukraine
 
  • Cherkasy Oblast
    • Zvenyhorodka
Gornostayev, S.S., Laajoki, K.V.O., and Popovchenko, S.E. (2002): The chromitites of the Kapitanov deposit, Ukrainian Shield. Presented at the 47th Annual GAC-MAC meeting, Saskatoon, Canada.
USA
 
  • Pennsylvania
    • Chester Co.
      • State Line Chromite Mining District
Smith and Barnes (2011) Pennsylvania Geology v. 41, no. 3/4.
 
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