General Iridisite Information Chemical Formula: |
(Ir,Cu,Rh,Ni,Pt)S2 |
Composition: |
Molecular Weight = 186.82 gm |
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Copper 10.20 % Cu |
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Nickel 3.14 % Ni |
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Iridium 30.87 % Ir |
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Platinum 10.44 % Pt |
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Rhodium 11.02 % Rh |
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Sulfur 34.33 % S |
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100.00 % |
Empirical Formula: |
Ir0.3Cu0.3Rh0.2Ni0.1Pt0.1S2 |
Environment: |
Heavy mineral concentrate from placers derived from nearby ultramafic rocks. |
IMA Status: |
Not Approved IMA |
Locality: |
Unstated locality in China. Link to MinDat.org Location Data. |
Name Origin: |
The name is intended to distinguish the mineral from "normal" iridium sulfide. |
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Images:
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| | Iridisite Crystallography Cell Dimensions: |
a = 5.635, Z = 8; V = 178.93 Den(Calc)= 13.87 |
Crystal System: |
IsometricSpace Group: Unk |
| Physical Properties of Iridisite Color: |
Steel gray. |
Diaphaneity: |
Opaque |
Hardness: |
7 - Quartz |
Luster: |
Metallic |
Streak: |
black |
| Optical Properties of Iridisite RL Anisotrophism: |
None. |
RL Bireflectance: |
None. |
RL Color: |
Grayish brownish white. |
RL Pleochroism: |
None. |
Reflectivity |
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| Calculated Properties of Iridisite Electron Density: |
Bulk Density (Electron Density)=12.4 gm/cc |
note: Specific Gravity of Iridisite =13.9 gm/cc. Fermion Index: |
Fermion Index = 0.03 |
Boson Index = 0.97 Photoelectric: |
PEIridisite = 612.17 barns/electron |
U=PEIridisite x rElectron Density=7,580.85 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Iridisite is Not Radioactive | Iridisite Classification Dana Class: |
02.00.00.00 (02)Sulfide Minerals |
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(02.00)Without Dana Classification Numbers |
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(02.00.00)Sulfide |
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Strunz Class: |
02.XX.00 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.X - Unclassified Strunz SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarse |
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02.XX -Sulfide |
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| Other Iridisite Information References: |
NAME( AmMin v74:1215) PHYS. PROP.(Am.Min.,Vol.81,1996) OPTIC PROP.(AmMin v74:1215) |
See Also: |
Links to other databases for Iridisite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Iridisite using: Visit our Advertisers for Iridisite : A Bijoux Google Search for IridisiteAdam's Minerals Google Search for Iridisite Cape Minerals Google Search for Iridisite Dakota Matrix Minerals Google Search for Iridisite Excalibur Mineral Corp. Google Search for Iridisite Exceptional Minerals Google Search for Iridisite John Betts Fine Minerals Search for Iridisite McDougall Minerals Google Search for Iridisite Mineral News Website Link Rock and Mineral Shows Google Search for Iridisite Weinrich Minerals, Inc. Google Search for Iridisite Ask about Iridisite here : Print or Cut-and-Paste your Iridisite Specimen Label here :
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