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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Ruarsite Mineral Data
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General Ruarsite Information
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Chemical Formula: |
RuAsS |
Composition: |
Molecular Weight = 208.06 gm |
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Arsenic 36.01 % As |
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Ruthenium 48.58 % Ru |
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Sulfur 15.41 % S |
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______ |
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100.00 % |
Empirical Formula: |
RuAsS |
Environment: |
Found in heavy mineral concentrates and in chromium ore derived from an Alpine-type ultramafic. |
IMA Status: |
Approved IMA 1979 |
Locality: |
Anduo, northern Tibet, China Link to MinDat.org Location Data. |
Name Origin: |
Named for the composition, RUthenium, ARsenic, and Sulfur. |
Name Pronunciation: |
Ruarsite |
Synonym: |
ICSD 42579 |
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PDF 27-568 |
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Ruarsite Image |
Images:
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Ruarsite
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 |
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Ruarsite Crystallography
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Axial Ratios: |
a:b:c =1.0027:1:1.0148 |
Cell Dimensions: |
a = 5.931, b = 5.915, c = 6.003, Z = 4; beta = 112.45° V = 194.64 Den(Calc)= 7.10 |
Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c |
X Ray Diffraction: |
By Intensity(I/Io): 2.74(1), 2.77(1), 1.87(0.9), |
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Physical Properties of Ruarsite
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Cleavage: |
None |
Color: |
Gray, Dark lead gray. |
Diaphaneity: |
Opaque |
Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. |
Hardness: |
6-7 - Orthoclase-Quartz |
Luster: |
Metallic |
Streak: |
grayish black |
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Optical Properties of Ruarsite
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RL Anisotrophism: |
Distinct, bluish gray to light reddish. |
RL Color: |
Grayish white. |
RL Pleochroism: |
Pale yellowish white to light grayish yellow-white. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Ruarsite in Air
λ |
R |
![](../images/Reflect_scale_v.gif) |
∑ R(λ) |
480 nm |
43.40 |
![](../images/480nm.BMP) |
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546 nm |
44.10 |
![](../images/546nm.BMP) |
589 nm |
43.80 |
![](../images/589nm.BMP) |
656 nm |
45.10 |
![](../images/656nm.BMP) |
Calculated Relative Intensity Colors of Ruarsite in Air
Relative Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
R |
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Calculated Properties of Ruarsite
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Electron Density: |
Bulk Density (Electron Density)=6.35 gm/cc note: Specific Gravity of Ruarsite =7.10 gm/cc. |
Fermion Index: |
Fermion Index = 0.14 Boson Index = 0.86 |
Photoelectric: |
PERuarsite = 124.48 barns/electron U=PERuarsite x rElectron Density= 790.13 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ruarsite is Not Radioactive |
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Ruarsite Classification
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Dana Class: |
02.12.04.04 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.04)Arsenopyrite Group (Monoclinic: P21/c (Pseudo-orthorhombic)) |
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02.12.04.01 Arsenopyrite FeAsS P 21/c 2/m |
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02.12.04.02 Gudmundite FeSbS P 21/n 2/m |
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02.12.04.03 Osarsite (Os,Ru)AsS P 21/c 2/m |
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02.12.04.04 Ruarsite RuAsS P 21/c 2/m |
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02.12.04.05 Iridarsenite (Ir,Ru)As2 P 21/c 2/m |
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02.12.04.06 Clinosafflorite (Co,Fe,Ni)As2 P 21/n 2/m |
Strunz Class: |
02.EB.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc. |
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02.EB.20 Arsenopyrite FeAsS P 21/c 2/m |
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02.EB.20 Gudmundite FeSbS P 21/n 2/m |
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02.EB.20 Ruarsite RuAsS P 21/c 2/m |
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02.EB.20 Paxite CuAs2 P 21/c 2/m |
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02.EB.20 Osarsite (Os,Ru)AsS P 21/c 2/m |
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Other Ruarsite Information
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References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
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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Print or Cut-and-Paste your Ruarsite Specimen Label here :
Ruarsite
RuAsS
Dana No: 02.12.04.04 Strunz No: 02.EB.20
Locality:
Notes:
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