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Osarsite

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Formula:
OsAsS
System:
Monoclinic
Colour:
Gray
Lustre:
Metallic
Hardness:
6
Name:
Named for its composition, being an OSmium ARSenide.

Classification of Osarsite

Approved
First Published:
1972
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 Osarsite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Gray
Comment:
In reflected light
Hardness (Mohs):
6
Density:
8.44 g/cm3 (Calculated)

Optical Data of Osarsite

Type:
Anisotropic
Anisotropism:
Weak but distinct in air.

Chemical Properties of Osarsite

IMA Formula:
OsAsS
Elements listed in formula:
Common Impurities:
Ir,Pd,Pt,Rh,Ni,Fe,Co

Crystallography of Osarsite

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 Volume:
V 194.48 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.79 (100)
2.74 (70)
2.78 (60)
2.01 (60)
1.892 (100)
1.870 (80)
1.832 (60

Type Occurrence of Osarsite

Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 123218.
Geological Setting of Type Material:
Placer sand

Relationship of Osarsite to other Species

Other Members of Group:
ArsenopyriteFeAsS
Glaucodot(Co0.50Fe0.50)AsS
GudmunditeFeSbS
Ruarsite(Ru,Os)AsS
Structurally related to group(s):
2.EB.05aAurostibiteAuSb2
2.EB.05bBambollaiteCu(Se,Te)2
2.EB.05aCattieriteCoS2
2.EB.05aErlichmaniteOsS2
2.EB.05aFukuchiliteCu3FeS8
2.EB.05aGeversitePtSb2
2.EB.05aHaueriteMnS2
2.EB.05aInsizwaitePtBi2
2.EB.05aKrut'aiteCuSe2
2.EB.05aLauriteRuS2
2.EB.05aPenroseiteNiSe2
2.EB.05aPyriteFeS2
2.EB.05aSperrylitePtAs2
2.EB.05aTrogtaliteCoSe2
2.EB.05aVaesiteNiS2
2.EB.05aVillamaniniteCuS2
2.EB.05aDzharkeniteFeSe2
2.EB.05aGaotaiiteIr3Te8
2.EB.10bAlloclasiteCoAsS
2.EB.10dCostibiteCoSbS
2.EB.10aFerroseliteCoSe2
2.EB.10aFrohbergiteFeTe2
2.EB.10cGlaucodotCo0.5Fe0.5AsS
2.EB.10aKulleruditeNiSe2
2.EB.10aMarcasiteFeS2
2.EB.10aMattagamiteCoTe2
2.EB.10eParacostibiteCoSbS
2.EB.10ePararammelsbergiteNiAs2
2.EB.10fOeniteCoSbAs
2.EB.15aAnduoiteRuAs2
2.EB.15aClinosaffloriteCoAs2
2.EB.15aLöllingiteFeAs2
2.EB.15aNisbiteNiSb2
2.EB.15aOmeiiteOsAs2
2.EB.15cPaxiteCuAs2
2.EB.15aRammelsbergiteNiAs2
2.EB.15aSaffloriteCoAs2
2.EB.15bSeinäjokiteFeSb2
2.EB.20ArsenopyriteFeAsS
2.EB.20GudmunditeFeSbS
2.EB.20RuarsiteRuAsS
2.EB.25CobaltiteCoAsS
2.EB.25GersdorffiteNiAsS
2.EB.25HollingworthiteRhAsS
2.EB.25IrarsiteIrAsS
2.EB.25JolliffeiteNiAsSe
2.EB.25KrutoviteNiAs2
2.EB.25MaslovitePtBiTe
2.EB.25MicheneritePdBiTe
2.EB.25PadmaitePdBiSe
2.EB.25PlatarsitePtAsS
2.EB.25TestibiopalladitePdTe(Sb,Te)
2.EB.25TolovkiteIrSbS
2.EB.25UllmanniteNiSbS
2.EB.25WillyamiteCoSbS
2.EB.25ChangchengiteIrBiS
2.EB.25MayingiteIrBiTe
2.EB.25Hollingsworthite(Rh,Pt,Pd)AsS
2.EB.25KalungaitePdAsSe
2.EB.25MilotaitePdSbSe
2.EB.30UrvantsevitePd(Bi,Pb)2
2.EB.35RheniiteReS2
3.12.1SeinäjokiteFeSb2
3.12.2LauriteRuS2
3.12.3Ruthenarsenite(Ru,Ni)As
3.12.4AnduoiteRuAs2
3.12.5RuarsiteRuAsS
3.12.6Xingzhongite(Cu,Pb,Fe)Ir2S4
3.12.7RhodplumsiteRh3Pb2S2
3.12.8CuprorhodsiteCuRh2S4
3.12.9KonderitePbCu3Rh8S16
3.12.10BowieiteRh2S3
3.12.11CherepanoviteRhAs
3.12.12HollingworthiteRhAsS
3.12.13Vysotskite(Pd,Ni)S
3.12.14Vasilite(Pd,Cu)16(S,Te)7
3.12.15PalladseitePd17Se15
3.12.16Oosterboschite(Pd,Cu)7Se5
3.12.17TelluropalladinitePd9Te4
3.12.18TemagamitePd3HgTe3
3.12.19SopcheiteAg4Pd3Te4
3.12.20MicheneritePdBiTe
3.12.21KotulskitePd(Te,Bi)2-x (x~0.4)
3.12.22Telargpalite(Pd,Ag)3Te
3.12.23MerenskyitePdTe2
3.12.24PalladoarsenidePd2As
3.12.25StillwateritePd8As3
3.12.26AtheneitePd2(As0.75Hg0.25)
3.12.27MajakitePdNiAs
3.12.28PalarstanidePd5(Sn,As)2
3.12.29ArsenopalladinitePd8As3
3.12.30VincentitePd3As
3.12.31PalladobismutharsenidePd2(As,Bi)
3.12.32StibiopalladinitePd5Sb2
3.12.33Hexatestibiopanickelite(Pd,Ni)(Sb,Te)
3.12.34SudburyitePdSb
3.12.35TestibiopalladitePdTe(Sb,Te)
3.12.36BorovskitePd3SbTe4
3.12.37IsomertieitePd11Sb2As2
3.12.38Mertieite-IPd5+x(Sb,As)2-x (x=0.1-0.2)
3.12.39Mertieite-IIPd8(Sb,As)3
3.12.40SobolevskitePdBi
3.12.41FrooditePdBi2
3.12.42PolaritePd(Bi,Pb)
3.12.43UrvantsevitePd(Bi,Pb)2
3.12.44CooperitePtS
3.12.45BraggitePtS
3.12.46Kharaelakhite(Cu,Pt,Pb,Fe,Ni)9S8
3.12.47MalaniteCuPt2S4
3.12.48MoncheitePt(Te,Bi)2
3.12.49MaslovitePtBiTe
3.12.50SperrylitePtAs2
3.12.51PlatarsitePtAsS
3.12.52GeversitePtSb2
3.12.53DaomaniteCuPtAsS2
3.12.54GenkinitePt4Sb3
3.12.55StumpflitePtSb
3.12.56InsizwaitePtBi2
3.12.57ErlichmaniteOsS2
3.12.58OmeiiteOsAs2
3.12.60KashiniteIr2S3
3.12.61InaglyitePbCu3Ir8S16
3.12.62CuproiridsiteCuIr2S4
3.12.63IridarseniteIrAs2
3.12.64IrarsiteIrAsS
3.12.65TolovkiteIrSbS

Other Names for Osarsite

Name in Other Languages:
German:Osarsit
Spanish:Osarsita

Other Information

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 Osarsite

Reference List:
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 Osarsite

mindat.org URL:
https://www.mindat.org/min-3034.html
Please feel free to link to this page.

Localities for Osarsite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Brazil
 
  • Minas Gerais
    • Fortaleza de Minas
Marchetto (1990) Econ Geol 85:921-927
China
 
  • Tibet Autonomous Region
    • Nagchu Prefecture (Naqu Prefecture)
      • Amdo Co. (Anduo Co.)
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Finland
 
  • Eastern Finland Region
Hytönen,K. (1999): Suomen Mineraalit. Geologian tutkimuskeskus. Erillisjulkaisu, Jyväskylä, 399 pp.
Econ Geol (1995) 90:445-452
Törroos Ragnar, Johanson Bo, Kojonen Kar, 1998. Alluvial nuggets of platinum group minerals and alloys from Finnish Lapland. Geological survey of Finland, Special Paper
    • Inari
      • Lemmenjoki
33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Pt-Pd selenides from river placers, northern Finland
Kojonen, K., Tarkian, M., Heidrich, S. & Johanson, B. (2014) Placer Platinum-group Minerals from Sotajoki River, Inari, Finland. 12th International Platinum Symposium p259
Greece
 
  • Macedonia Department
    • Kozáni Prefecture
      • Kozáni and Grevena prefectures 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
 
  • Sør-Trøndelag
    • Røros
      • Feragen
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
South Africa
 
  • Free State Province
Minerals of South Africa
Spain
 
  • Andalusia
    • Málaga
      • Ojén
Mineralogy and Petrology: 56: 25-50.
USA
 
  • Alaska
    • Bethel Borough
      • Goodnews Bay
Canadian Mineralogist 40:463-471
  • California
    • Humboldt Co.
      • Orick 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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