Osarsite Mineral Data + 
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- 2.12.4.1 Arsenopyrite FeAsS P 21/c 2/m
- 2.12.4.2 Gudmundite FeSbS P 21/n 2/m
- 2.12.4.3 Osarsite (Os,Ru)AsS P 21/c 2/m
- 2.12.4.4 Ruarsite RuAsS P 21/c 2/m
- 2.12.4.5 Iridarsenite (Ir,Ru)As2 P 21/c 2/m
- 2.12.4.6 Clinosafflorite (Co,Fe,Ni)As2 P 21/n 2/m
- II/D.22-10 Arsenopyrite FeAsS P 21/c 2/m
- II/D.22-20 Glaucodot (Co,Fe)AsS C mmm 2/m 2/m 2/m
- II/D.22-30 Gudmundite FeSbS P 21/n 2/m
- II/D.22-40 Ruarsite RuAsS P 21/c 2/m
- II/D.22-50 Osarsite (Os,Ru)AsS P 21/c 2/m
- II/D.22-60 Alloclasite (Co,Fe)AsS P 22121 2 2 2
General Osarsite Information |
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 Chemical Formula: |
(Os,Ru)AsS | ||
| Composition: |
Molecular Weight = 274.91 gm | ||
| Arsenic 27.25 % As | |||
| Osmium 51.89 % Os | |||
| Ruthenium 9.19 % Ru | |||
| Sulfur 11.66 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Os0.75Ru0.25AsS | ||
| Environment: |
In a platinum-bearing sample of placer sand. | ||
| IMA Status: |
Approved IMA 1972 | ||
| Locality: |
Gold Bluff, 3 to 6 miles north of Orick, Humboldt Co., California. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after it's chemical composition of osmium and arsenic. | ||
| Synonym: |
ICSD 42580 | ||
| PDF 25-595 | |||
Search for Osarsite Images | |||
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Images:
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Osarsite Crystallography |
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| Axial Ratios: |
a:b:c =1.0028:1:1.0157 | ||
| Cell Dimensions: |
a = 5.933, b = 5.916, c = 6.009, Z = 4; beta = 112.35° V = 195.07 Den(Calc)= 9.36 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | ||
| X Ray Diffraction: |
By Intensity(I/Io): 1.892(1), 3.79(1), 1.87(0.8), | ||
Physical Properties of Osarsite |
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| Color: |
Gray. | ||
| Density: |
8.44 | ||
| Diaphaniety: |
Opaque | ||
| Habit: |
Intergrown Crystals - Occurs as intergrown crystalline aggregates | ||
| Hardness: |
6 - Orthoclase | ||
| Luster: |
Metallic | ||
Optical Properties of Osarsite |
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| RL Anisotrophism: |
Weak but distinct in air. | ||
| RL Color: |
Gray. | ||
Calculated Properties of Osarsite |
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| Electron Density: |
relectron=7.97 gm/cc |
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| Fermion Index |
Fermion Index = 0.12011 Boson Index = 0.87989 |
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| Photoelectric: |
PEOsarsite = 759.50 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Osarsite is Not Radioactive |
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Osarsite Classification |
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| Dana Class: |
2.12.4.3 (2)Sulfides - Including Selenides and Tellurides | ||
| (2.12)where Am Bn Xp, with (m+n):p=1:2 | |||
| (2.12.4)Arsenopyrite Group (Monoclinic: P21/c (Pseudo-orthorhombic)) | |||
| Strunz Class: |
II/D.22-50 II - Sulfides and sulphosalts | ||
| II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold | |||
| II/D.22 - Arsenopyrite series | |||
Other Osarsite Information |
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| References: |
NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) | ||
| See Also: |
Links to other databases for Osarsite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Osarsite using: Visit our Advertisers for Osarsite : Translate Osarsite Mineral Data : Ask about Osarsite here : Print or Cut-and-Paste your Osarsite Specimen Label here :
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