Osarsite Mineral Data + Say OSARSITE


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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 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 Diaphaniety: Diaphaniety: 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:

relectron=7.97 gm/cc
note: rOsarsite =9.36 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.12011
Boson Index = 0.87989
Help on Photoelectric: Photoelectric:

PEOsarsite = 759.50 barns/electron
U=PEOsarsite x relectron=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: 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))
 
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
Help on  Strunz Class: 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
 
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
 

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 -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

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Osarsite

(Os,Ru)AsS
Dana No: 2.12.4.3 Strunz No: II/D.22-50
Locality:

 

Notes:

 

 
   
 
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