Omeiite  Mineral Data

Omeiite Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Omeiite Information

Help on Chemical  Formula: Chemical Formula: (Os,Ru)As2
Help on Composition: Composition: Molecular Weight = 317.76 gm
   Arsenic    47.16 %  As
   Osmium     44.89 %  Os
   Ruthenium   7.95 %  Ru
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Os0.75Ru0.25As2
Help on Environment: Environment: Found in a Cu-Ni sulfide deposit associated with an ultramafic body.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Danba, Omeishan Mt, Sichuan (Szechuan), China, Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Omeiite Say OMEIITE
Help on Synonym: Synonym: ICSD 995
  PDF 34-336
 

Search for Omeiite Images

Click Here To Search Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

  

Omeiite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8174:1:0.4565
Help on Cell Dimensions: Cell Dimensions: a = 5.409, b = 6.617, c = 3.021, Z = 2; V = 108.13 Den(Calc)= 9.76
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.915(1), 2.63(1), 2.67(0.8),
Click Here for Large Omeiite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate

Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above


OsAs2 , Kjekshus A , Rakke T , Andresen A F , Acta Chemica Scandinavica A , 31 (1977) p.253-259, Compounds with the marcasite type crystal structure. XII. Structural data for, RuP2, RuAs2, RuSb2, OsP2, OsAs2, and OsSb2, Locality: synthetic

 

Physical Properties of Omeiite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Steel gray.
Help on Density: Density: 11.2
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Metallic
 

Optical Properties of Omeiite

Help on RL Anisotrophism: RL Anisotrophism: Distinct.
Help on RL Color: RL Color: White with a yellow tint in air, milky yellow in oil.
Help on RL Pleochroism: RL Pleochroism: Weak, yellow to grayish yellow..
 

Calculated Properties of Omeiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=8.23 gm/cc
note: Specific Gravity of Omeiite =9.76 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.1
Boson Index = 0.9
Help on Photoelectric: Photoelectric: PEOmeiite = 680.53 barns/electron
U=PEOmeiite x rElectron Density=5,601.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Omeiite is Not Radioactive
 

Omeiite Classification

Help on  Dana Class: Dana Class: 02.12.02.07 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.02)Marcasite Group (Orthorhombic: Pnnm)
 
02.12.02.01 Marcasite FeS2 Pnnm 2/m 2/m 2/m
 
02.12.02.02 Ferroselite FeSe2 Pnnm 2/m 2/m 2/m
 
02.12.02.03 Frohbergite FeTe2 Pnnm 2/m 2/m 2/m
 
02.12.02.04 Hastite? CoSe2 Pnnm 2/m 2/m 2/m
 
02.12.02.05 Mattagamite CoTe2 Pnnm 2/m 2/m 2/m
 
02.12.02.06 Kullerudite NiSe2 Pnnm 2/m 2/m 2/m
 
02.12.02.07 Omeiite (Os,Ru)As2 Pnnm 2/m 2/m 2/m
 
02.12.02.08 Anduoite (Ru,Os)As2 Pnnm 2/m 2/m 2/m
 
02.12.02.09 Lollingite FeAs2 Pnnm 2/m 2/m 2/m
 
02.12.02.10 Seinajokite (Fe,Ni)(Sb,As)2 Pnnm 2/m 2/m 2/m
 
02.12.02.11 Safflorite (Co,Fe)As2 Pnnm 2/m 2/m 2/m
 
02.12.02.12 Rammelsbergite NiAs2 Pnnm 2/m 2/m 2/m
 
02.12.02.13 Nisbite NiSb2 Pnnm 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.EB.15a 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.15a Clinosafflorite (Co,Fe,Ni)As2 P 21/n 2/m
 
02.EB.15a Anduoite (Ru,Os)As2 Pnnm 2/m 2/m 2/m
 
02.EB.15a Lollingite FeAs2 Pnnm 2/m 2/m 2/m
 
02.EB.15a Omeiite (Os,Ru)As2 Pnnm 2/m 2/m 2/m
 
02.EB.15a Nisbite NiSb2 Pnnm 2/m 2/m 2/m
 
02.EB.15a Rammelsbergite NiAs2 Pnnm 2/m 2/m 2/m
 
02.EB.15a Safflorite (Co,Fe)As2 Pnnm 2/m 2/m 2/m
 

Other Omeiite Information

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

Search for Omeiite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Omeiite :

A Bijoux Google Search for Omeiite
Adam's Minerals Google Search for Omeiite
Cape Minerals Google Search for Omeiite
Dakota Matrix Minerals Google Search for Omeiite
Excalibur Mineral Corp. Google Search for Omeiite
Exceptional Minerals Google Search for Omeiite
John Betts Fine Minerals Search for Omeiite
McDougall Minerals Google Search for Omeiite
Mineral News Website Link
Rock and Mineral Shows Google Search for Omeiite
Weinrich Minerals, Inc. Google Search for Omeiite

Ask about Omeiite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Omeiite

(Os,Ru)As2
Dana No: 02.12.02.07 Strunz No: 02.EB.15a
Locality:

 

Notes: