Irarsite Mineral Data (original) (raw)
General Irarsite Information
(Ir,Ru,Rh,Pt)AsS
Molecular Weight = 254.29 gm
Arsenic 29.46 % As
Iridium 30.24 % Ir
Ruthenium 11.92 % Ru
Platinum 7.67 % Pt
Rhodium 8.09 % Rh
Sulfur 12.61 % S
______
100.00 %
Ir0.4Ru0.3Rh0.2Pt0.1AsS
Grains in chromite in hortonolite dunite. Intergrown with hollingworthite or laurite.
Approved IMA 1966
Ub tge Onverwacht and Driekop mines, Transvaal, South Africa. Link to MinDat.org Location Data.
For the Iridium and ARSenic in the composition.
Irarsite Image
Irarsite Ruthenarsenite Comments: Photomicrograph of the largest inclusion of ruthenarsenite (Ru) associated with irarsite inclusions (Ir) in a rutheniridosmine matrix. (CanMin, v12:280). Location: Papua New Guinea.Scale: See Image. © Canadian Mineralogist |
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Irarsite Crystallography
a = 5.777, Z = 5; V = 192.80 Den(Calc)= 10.95
Isometric - DiploidalH-M Symbol (2/m 3) Space Group: P a3
By Intensity(I/Io): 1.74(1), 2.87(1), 3.32(1),
Physical Properties of Irarsite
Iron black.
Opaque
Brittle - Generally displayed by glasses and most non-metallic minerals.
6.5 - Pyrite
Metallic
Optical Properties of Irarsite
White, grayish with blue tint.
Standardized Intensity (100%) Reflection Spectra of Irarsite in Air
λ | R | ∑ R(λ) | |
---|---|---|---|
420 nm | 44.00 | ||
440 nm | 43.70 | ||
460 nm | 43.30 | ||
480 nm | 42.60 | ||
500 nm | 42.10 | ||
520 nm | 41.20 | ||
540 nm | 40.60 | ||
560 nm | 39.70 | ||
580 nm | 39.10 | ||
600 nm | 38.60 | ||
620 nm | 38.10 | ||
640 nm | 37.80 | ||
660 nm | 37.20 | ||
680 nm | 36.80 | ||
700 nm | 36.60 |
Calculated Relative Intensity Colors of Irarsite in Air
RelativeIntensity | 0% | 30% | 60% | 90% | 100% | 120% | 150% | 180% | 210% | 230% |
---|---|---|---|---|---|---|---|---|---|---|
R |
Calculated Properties of Irarsite
Bulk Density (Electron Density)=9.46 gm/cc
note: Specific Gravity of Irarsite =11.0 gm/cc.
Fermion Index = 0.06
Boson Index = 0.94
PEIrarsite = 614.75 barns/electron
U=PEIrarsite x rElectron Density=5,813.33 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Irarsite is Not Radioactive
Irarsite Classification
02.12.03.07 (02)Sulfides - Including Selenides and Tellurides
(02.12)where Am Bn Xp, with (m+n):p=1:2
(02.12.03)Cobaltite Group (Cubic or pseudocubic crystals)
02.12.03.01 Cobaltite CoAsS P ca21 mm2
02.12.03.02 Gersdorffite NiAsS P 213 2 3
02.12.03.03 Ullmannite NiSbS P 213 2 3
02.12.03.04 Willyamite (Co,Ni)SbS P 213 2 3
02.12.03.05 Tolovkite IrSbS P 213 2 3
02.12.03.06 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3
02.12.03.07 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3
02.12.03.08 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3
02.12.03.09 Jolliffeite (Ni,Co)AsSe P a3 2/m 3
02.12.03.10 Padmaite PdBiSe P 213 2 3
02.12.03.11 Michenerite (Pd,Pt)BiTe P 213 2 3
02.12.03.12 Maslovite PtBiTe P 213 2 3
02.12.03.13 Testibiopalladite PdTe(Sb,Te) P 213 2 3
02.12.03.14 Changchengite! IrBiS P 213 2 3
02.12.03.15 Milotaite! PdSbSe P 21/3 2 3
02.12.03.16 Kalungaite! PdAsSe Pa3 2/m 3
02.EB.25 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.25 Cobaltite CoAsS P ca21 mm2
02.EB.25 Changchengite! IrBiS P 213 2 3
02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3
02.EB.25 Gersdorffite NiAsS P 213 2 3
02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3
02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3
02.EB.25 Krutovite NiAs2 P a3 2/m 3
02.EB.25 Michenerite (Pd,Pt)BiTe P 213 2 3
02.EB.25 Maslovite PtBiTe P 213 2 3
02.EB.25 Mayingite IrBiTe P a3 2/m 3
02.EB.25 Padmaite PdBiSe P 213 2 3
02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3
02.EB.25 Ullmannite NiSbS P 213 2 3
02.EB.25 Tolovkite IrSbS P 213 2 3
02.EB.25 Testibiopalladite PdTe(Sb,Te) P 213 2 3
02.EB.25 Willyamite (Co,Ni)SbS P 213 2 3
02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3
02.EB.25 Milotaite! PdSbSe P 21/3 2 3
Other Irarsite Information
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Links to other databases for Irarsite :
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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Print or Cut-and-Paste your Irarsite Specimen Label here :
Irarsite
(Ir,Ru,Rh,Pt)AsS
Dana No: 02.12.03.07 Strunz No: 02.EB.25
Locality:
Notes: