Ruarsite Mineral Data

General Ruarsite Information

Chemical Formula:

RuAsS

Composition:

Molecular Weight = 208.06 gm

Arsenic 36.01 % As

Ruthenium 48.58 % Ru

Sulfur 15.41 % S

______

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

PDF 27-568

Ruarsite Image

Images:

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

Ruarsite Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.74(1), 2.77(1), 1.87(0.9),

Physical Properties of Ruarsite

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

Optical Properties of Ruarsite

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	∑ 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**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R

Calculated Properties of Ruarsite

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:

PE_Ruarsite= 124.48 barns/electron
U=PE_Ruarsite x rElectron Density= 790.13 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ruarsite is Not Radioactive

Ruarsite Classification

Dana Class:

02.12.04.04 (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))

02.12.04.01 Arsenopyrite FeAsS P 2₁/c 2/m

02.12.04.02 Gudmundite FeSbS P 2₁/n 2/m

02.12.04.03 Osarsite (Os,Ru)AsS P 2₁/c 2/m

02.12.04.04 Ruarsite RuAsS P 2₁/c 2/m

02.12.04.05 Iridarsenite (Ir,Ru)As2 P 2₁/c 2/m

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

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

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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