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Osarsite

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Formula:
(Os,Ru)AsS
Colour:
Gray
Lustre:
Metallic
Hardness:
6
Specific Gravity:
8.44 (Calculated)
Crystal System:
Monoclinic
Name:
The name reflects its composition: osmium, arsenic and sulfur. The related minerals ruarsite, irarsite, and platarsite are similarly named.
Hide all sections | Show all sections

Classification of OsarsiteHide

Approved
Approval Year:
1971
First Published:
1972
Approval History:
IMA1971-025
2.EB.20

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.
2.12.4.3

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.12.59

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 OsarsiteHide

Metallic
Transparency:
Opaque
Colour:
Gray
Comment:
In reflected light
Hardness:
Density:
8.44 g/cm3 (Calculated)

Optical Data of OsarsiteHide

Type:
Anisotropic
Anisotropism:
Weak but distinct in air.

Chemical Properties of OsarsiteHide

Formula:
(Os,Ru)AsS
IMA Formula:
OsAsS
Common Impurities:
Ir,Pd,Pt,Rh,Ni,Fe,Co

Crystallography of OsarsiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 5.93 Å, b = 5.91 Å, c = 6 Å
β = 112.35°
Ratio:
a:b:c = 1.003 : 1 : 1.015
Unit Cell V:
194.48 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.79 Å(100)
2.74 Å(70)
2.78 Å(60)
2.01 Å(60)
1.892 Å(100)
1.870 Å(80)
1.832 Å(60

Type Occurrence of OsarsiteHide

Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 123218.
Geological Setting of Type Material:
Placer sand
Associated Minerals at Type Locality:
Reference:
Snetsinger, K.G. (1972) Osarsite, a new osmium-ruthenium sulfarsenide from California. American Mineralogist: 57: 1029-1036.

Synonyms of OsarsiteHide

Other Language Names for OsarsiteHide

German:Osarsit
Spanish:Osarsita

Relationship of Osarsite to other SpeciesHide

Other Members of this group:
ArsenopyriteFeAsSMon. 2/m : P21/b
Glaucodot(Co0.50Fe0.50)AsSOrth. mm2 : Pmn21
GudmunditeFeSbSMon. 2/m : P21/b
Ruarsite(Ru,Os)AsSMon.
Structurally related to group(s):

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.15aOmeiite(Os,Ru)As2Orth.
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.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

2.12.4.1ArsenopyriteFeAsSMon. 2/m : P21/b
2.12.4.2GudmunditeFeSbSMon. 2/m : P21/b
2.12.4.4Ruarsite(Ru,Os)AsSMon.
2.12.4.5Iridarsenite(Ir,Ru)As2Mon.
2.12.4.6ClinosaffloriteCoAs2Mon. 2/m : P21/m

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
3.12.58Omeiite(Os,Ru)As2Orth.
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

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 OsarsiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Snetsinger, K.G. (1972) Osarsite, a new osmium-ruthenium sulfarsenide from California. American Mineralogist: 57: 1029-1036.
Feather, C.E. (1976) Mineralogy of platinum-group minerals in the Witwatersrand, South Africa. Economic Geology: 71: 1399.

Internet Links for OsarsiteHide

Localities for OsarsiteHide

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
    • Fortaleza de Minas
Marchetto (1990) Econ Geol 85:921-927
Canada
 
  • Ontario
    • Thunder Bay District
      • Seagull Lake Area
        • Seagull Lake complex
Wilson, G., & Harper, G. (2013). Nipigon Reefs Project: A New Look at the PGE-bearing Seagull Mafic-Ultramafic Complex. Field Guide to the Copper-Nickel-Platinum Group Element Deposits of the Lake Superior Region, Precambrian Research Center Guidebook, 13-01.
China
 
  • Tibet
    • Nagchu Prefecture (Naqu Prefecture)
      • Amdo Co. (Anduo Co.)
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Finland
 
Törroos Ragnar, Johanson Bo, Kojonen Kar, 1998. Alluvial nuggets of platinum group minerals and alloys from Finnish Lapland. Geological survey of Finland, Special Paper
    • Enontekiö
      • Lemmenjoki
33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Pt-Pd selenides from river placers, northern Finland
    • Inari
Kojonen, K., Tarkian, M., Heidrich, S. & Johanson, B. (2014) Placer Platinum-group Minerals from Sotajoki River, Inari, Finland. 12th International Platinum Symposium p259
  • North Karelia
Hytönen,K. (1999): Suomen Mineraalit. Geologian tutkimuskeskus. Erillisjulkaisu, Jyväskylä, 399 pp.
Econ Geol (1995) 90:445-452
Greece
 
  • West Macedonia
    • Kozani and Grevena border area
      • Vourinos Mt ophiolite complex
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Auge, T. (1985). Platinum-group-mineral inclusions in ophiolitic chromitite from the Vourinos Complex, Greece. The Canadian Mineralogist, 23(2), 163-171.
India
 
  • Karnataka
    • Shimoga schist belt
T. T. Alapieti, T. C. Devaraju, R. J. Kaukonen (2005) Sem-eds Study of the Platinum-group Minerals in the PGE mineralized Hanumalapura Segment of the Layeredmafic-ultramafic Complex of Channagiri, Davangere District, Karnataka. Jour. Geol. Soc. India, 65:745-752.
Norway
 
  • Trøndelag
    • Røros
Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263
Russia
 
  • Irkutsk Oblast
    • 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.; Ognitite, NiBiTe, a new mineral species, and cobaltian maucherite from the Ognit ultramafic complex, Eastern Sayans, Russia (electronic preprint)
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.
  • Sayan Mountains
Kiseleva, O. N., Zhmodik, S. M., Damdinov, B. B., Agafonov, L. V., & Belyanin, D. K. (2014). Composition and evolution of PGE mineralization in chromite ores from the Il’chir ophiolite complex (Ospa–Kitoi and Khara-Nur areas, East Sayan). Russian Geology and Geophysics, 55(2), 259-272.
  • Zabaykalsky Krai
    • Buriatia Republic (Buryatia)
Spiridonov, E. M., Ariskin, A. A., Kislov, E. V., Korotaeva, N. N., Nikolaev, G. S., Pshenitsyn, I. V., & Yapaskurt, V. O. (2018). Laurite and Ir-osmium from plagioclase lherzolite of the Yoko–Dovyren mafic–ultramafic pluton, Northern Baikal Region. Geology of Ore Deposits, 60(3), 210-219.
South Africa
 
Minerals of South Africa
Spain
 
  • Andalusia
    • Málaga
      • Ojén
Mineralogy and Petrology: 56: 25-50.
Gervilla, F., Gutiérrez-Narbona, R., & Fenoll-Hach-Alí, P. (2002). The origin of different types of magmatic mineralizations from small-volume melts in the lherzolite massifs of the Serranía de Ronda. Boletín de la Sociedad Espanola de Mineralogía, 25, 79-96.
USA
 
  • Alaska
    • Bethel Census Area
      • Goodnews Bay
Canadian Mineralogist 40:463-471
  • California
    • Humboldt Co.
      • Orick Mining District
        • Orick
          • Gold Bluffs
Snetsinger, K.G. (1972) Osarsite, a new osmium-ruthenium sulfarsenide from California. American Mineralogist: 57: 1029; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 63.
 
Mineral and/or Locality  
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