Mineralogy Database

Anduoite Mineral Data

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General Anduoite Information

Help on Chemical  Formula: Chemical Formula: (Ru,Os)As2
Help on Composition: Composition: Molecular Weight = 273.20 gm
   Arsenic    54.85 %  As
   Osmium     17.41 %  Os
   Ruthenium  27.75 %  Ru
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Ru0.75Os0.25As2
Help on Environment: Environment: Occurs in a chromium deposit related to augite peridotite and dunite.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: From Anduo, Tibet, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the Chinese locality at Anduo.
Help on Name Pronunciation: Name Pronunciation: Anduoite Say ANDUOITE
Help on Synonym: Synonym: ICSD 42738
  PDF 33-1144
 

Anduoite Image

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  Anduoite

Comments: Backscattered electron Image of euhedral anduoite crystal enclosed in chromian spinel containing lamellae of ilmenite. Image on left is large view, image on right is detailed view. (CanMin, v 39, p 596).
Location: Chromitite ore, Kapitanov deposit, Ukrainian Shield, Ukraine. Scale: See Image.
© Canadian Mineralogist

Anduoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8717:1:0.485
Help on Cell Dimensions: Cell Dimensions: a = 5.41, b = 6.206, c = 3.01, Z = 2; V = 101.06 Den(Calc)= 8.98
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.92(1), 1.095(0.9), 1.501(0.9),
 

Physical Properties of Anduoite

Help on Cleavage: Cleavage: None
Help on Color: Color: Lead gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Malleable - Deforms rather than breaking apart with a hammer.
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Metallic
Help on Streak: Streak: grayish black
 

Optical Properties of Anduoite

Help on RL Anisotrophism: RL Anisotrophism: Marked in air from brownish yellow to grayish green, pale red to pale green, pronounced in oil.
Help on RL Color: RL Color: White with pink tint.
Help on RL Pleochroism: RL Pleochroism: Noticeable in air, from pinkish grayish white to pinkish white, distinct in oil.
 

Calculated Properties of Anduoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.76 gm/cc
note: Specific Gravity of Anduoite =8.98 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEAnduoite = 336.17 barns/electron
U=PEAnduoite x rElectron Density=2,607.79 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Anduoite is Not Radioactive
 

Anduoite Classification

Help on  Dana Class: Dana Class: 02.12.02.08 (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 Anduoite 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 Anduoite :
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

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Anduoite

(Ru,Os)As2
Dana No: 02.12.02.08 Strunz No: 02.EB.15a
Locality:

 

Notes:

 

 
   
 


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