Osarsite Mineral Data

Osarsite Mineral Data
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General Osarsite Information

Help on Chemical Formula: Chemical Formula: (Os,Ru)AsS
Help on Composition: Composition: Molecular Weight = 274.91 gm
   Arsenic    27.25 %  As
   Osmium     51.89 %  Os
   Ruthenium   9.19 %  Ru
   Sulfur     11.66 %  S
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Os0.75Ru0.25AsS
Help on Environment: Environment: In a platinum-bearing sample of placer sand.
Help on IMA Status: IMA Status: Approved IMA 1972
Help on Locality: Locality: Gold Bluff, 3 to 6 miles north of Orick, Humboldt Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after it's chemical composition of osmium and arsenic.
Help on Name Pronunciation: Name Pronunciation: Osarsite Say OSARSITE
Help on Synonym: Synonym: ICSD 42580
  PDF 25-595
 

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Osarsite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0028:1:1.0157
Help on Cell Dimensions: Cell Dimensions: a = 5.933, b = 5.916, c = 6.009, Z = 4; beta = 112.35° V = 195.07 Den(Calc)= 9.36
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.892(1), 3.79(1), 1.87(0.8),
 

Physical Properties of Osarsite

Help on Color: Color: Gray.
Help on Density: Density: 8.44
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Intergrown Crystals - Occurs as intergrown crystalline aggregates
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Metallic
 

Optical Properties of Osarsite

Help on RL Anisotrophism: RL Anisotrophism: Weak but distinct in air.
Help on RL Color: RL Color: Gray.
 

Calculated Properties of Osarsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.97 gm/cc
note: Specific Gravity of Osarsite =9.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.12
Boson Index = 0.88
Help on Photoelectric: Photoelectric: PEOsarsite = 759.50 barns/electron
U=PEOsarsite x rElectron Density=6,051.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Osarsite is Not Radioactive
 

Osarsite Classification
Help on Dana Class: Dana Class: 02.12.04.03 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.04)Arsenopyrite Group (Monoclinic: P21/c (Pseudo-orthorhombic))
 
02.12.04.01 Arsenopyrite FeAsS P 21/c 2/m
 
02.12.04.02 Gudmundite FeSbS P 21/n 2/m
 
02.12.04.03 Osarsite (Os,Ru)AsS P 21/c 2/m
 
02.12.04.04 Ruarsite RuAsS P 21/c 2/m
 
02.12.04.05 Iridarsenite (Ir,Ru)As2 P 21/c 2/m
 
02.12.04.06 Clinosafflorite (Co,Fe,Ni)As2 P 21/n 2/m
Help on Strunz Class: Strunz Class: 02.EB.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S £ 1:2
  02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.
 
02.EB.20 Arsenopyrite FeAsS P 21/c 2/m
 
02.EB.20 Gudmundite FeSbS P 21/n 2/m
 
02.EB.20 Ruarsite RuAsS P 21/c 2/m
 
02.EB.20 Paxite CuAs2 P 21/c 2/m
 
02.EB.20 Osarsite (Os,Ru)AsS P 21/c 2/m
 

Other Osarsite Information
Help on References: References: NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Osarsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Osarsite Specimen Label here :

Osarsite

(Os,Ru)AsS
Dana No: 02.12.04.03 Strunz No: 02.EB.20
Locality:

 

Notes: