Mineralogy Database

Ruarsite Mineral Data

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General Ruarsite Information

Help on Chemical  Formula: Chemical Formula: RuAsS
Help on Composition: Composition: Molecular Weight = 208.06 gm
   Arsenic    36.01 %  As
   Ruthenium  48.58 %  Ru
   Sulfur     15.41 %  S
             100.00 % 
Help on Empirical Formula: Empirical Formula: RuAsS
Help on Environment: Environment: Found in heavy mineral concentrates and in chromium ore derived from an Alpine-type ultramafic.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Anduo, northern Tibet, China Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition, RUthenium, ARsenic, and Sulfur.
Help on Name Pronunciation: Name Pronunciation: Ruarsite Say RUARSITE
Help on Synonym: Synonym: ICSD 42579
  PDF 27-568

Ruarsite Image

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Comments: BSE image showing LR: laurite, RURS: ruarsite, Ru-–ox: Ru oxide(?), Ru-Ni-As-S: unnamed Ru-Ni sulfarsenide. (CanMin, v31:331).
Location: Podiform chromitites of the Kraubath and Hochgrossen dunite-harzburgite massifs, Eastern Alps of Austria. Scale: Scale Bar 10 µm.
© Canadian Mineralogist

Ruarsite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0027:1:1.0148
Help on Cell Dimensions: Cell Dimensions: a = 5.931, b = 5.915, c = 6.003, Z = 4; beta = 112.45° V = 194.64 Den(Calc)= 7.10
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.74(1), 2.77(1), 1.87(0.9),

Physical Properties of Ruarsite

Help on Cleavage: Cleavage: None
Help on Color: Color: Gray, Dark lead gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Help on Hardness: Hardness: 6-7 - Orthoclase-Quartz
Help on Luster: Luster: Metallic
Help on Streak: Streak: grayish black

Optical Properties of Ruarsite

Help on RL Anisotrophism: RL Anisotrophism: Distinct, bluish gray to light reddish.
Help on RL Color: RL Color: Grayish white.
Help on RL Pleochroism: RL Pleochroism: Pale yellowish white to light grayish yellow-white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Ruarsite in Air
λ R  ∑ R(λ) 
 480 nm   43.40   
 546 nm   44.10 
 589 nm   43.80 
 656 nm   45.10 
Calculated Relative Intensity Colors of Ruarsite in Air
   0%   30%   60%   90% 100% 120% 150% 180% 210%

Calculated Properties of Ruarsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.35 gm/cc
note: Specific Gravity of Ruarsite =7.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.14
Boson Index = 0.86
Help on Photoelectric: Photoelectric: PERuarsite = 124.48 barns/electron
U=PERuarsite x rElectron Density= 790.13 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ruarsite is Not Radioactive

Ruarsite Classification

Help on  Dana Class: Dana Class: (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)) Arsenopyrite FeAsS P 21/c 2/m Gudmundite FeSbS P 21/n 2/m Osarsite (Os,Ru)AsS P 21/c 2/m Ruarsite RuAsS P 21/c 2/m Iridarsenite (Ir,Ru)As2 P 21/c 2/m 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 Ruarsite 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 Ruarsite :
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

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Dana No: Strunz No: 02.EB.20





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