Irarsite Mineral Data (original) (raw)

General Irarsite Information

Help on Chemical  Formula: Chemical Formula:

(Ir,Ru,Rh,Pt)AsS

Help on Composition: Composition:

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 %

Help on Empirical Formula: Empirical Formula:

Ir0.4Ru0.3Rh0.2Pt0.1AsS

Help on Environment: Environment:

Grains in chromite in hortonolite dunite. Intergrown with hollingworthite or laurite.

Help on IMA Status: IMA Status:

Approved IMA 1966

Help on Locality: Locality:

Ub tge Onverwacht and Driekop mines, Transvaal, South Africa. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

For the Iridium and ARSenic in the composition.

Help on Name Pronunciation: Name Pronunciation:

Irarsite Say IRARSITE

Irarsite Image

Click Here for Larger Irarsite Image in a New Browser Window Images:

Click Here for Larger 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

Irarsite Crystallography

Help on Cell Dimensions: Cell Dimensions:

a = 5.777, Z = 5; V = 192.80 Den(Calc)= 10.95

Help on Crystal System: Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: P a3

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 1.74(1), 2.87(1), 3.32(1),

Physical Properties of Irarsite

Help on Color: Color:

Iron black.

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Help on Hardness: Hardness:

6.5 - Pyrite

Help on Luster: Luster:

Metallic

Optical Properties of Irarsite

Help on RL Color: RL Color:

White, grayish with blue tint.

Help on Reflectivity Reflectivity

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

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=9.46 gm/cc
note: Specific Gravity of Irarsite =11.0 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Help on Photoelectric: Photoelectric:

PEIrarsite = 614.75 barns/electron
U=PEIrarsite x rElectron Density=5,813.33 barns/cc.

Help on Radioactivity: Radioactivity:

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

Irarsite Classification

Help on  Dana Class: Dana Class:

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

Help on  Strunz Class: Strunz Class:

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

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 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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Ask about Irarsite here :
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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: