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Iridisite Mineral Data
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General Iridisite Information
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 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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______ |
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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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Iridisite Crystallography
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| Cell Dimensions: |
a = 5.635, Z = 8; V = 178.93 Den(Calc)= 13.87 |
| Crystal System: |
Isometric Space Group: Unk |
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Physical Properties of Iridisite
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| Color: |
Steel gray. |
| Diaphaneity: |
Opaque |
| Hardness: |
7 - Quartz |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Iridisite
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| RL Anisotrophism: |
None. |
| RL Bireflectance: |
None. |
| RL Color: |
Grayish brownish white. |
| RL Pleochroism: |
None. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Iridisite in Air
| λ |
R1 |
R2 |
 |
∑ R1(λ) |
∑ R2(λ) |
| 402 nm |
43.70 |
43.40 |
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|
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| 439 nm |
45.40 |
44.00 |
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| 480 nm |
45.40 |
44.10 |
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| 495 nm |
46.30 |
44.40 |
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| 546 nm |
47.30 |
44.70 |
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| 590 nm |
47.30 |
44.80 |
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| 624 nm |
47.40 |
45.20 |
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| 644 nm |
47.10 |
45.40 |
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| 657 nm |
46.70 |
44.70 |
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Calculated Relative Intensity Colors of Iridisite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
200% |
| R1 |
|
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| R2 |
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Calculated Properties of Iridisite
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| Electron Density: |
Bulk Density (Electron Density)=12.4 gm/cc
note: Specific Gravity of Iridisite =13.9 gm/cc.
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| 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.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Iridisite is Not Radioactive |
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Iridisite Classification
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| 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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02.00.00.00 Argentite* Ag2S I m3m 4/m 3 2/m |
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02.00.00.00 Bayankhanite? Cu6HgS4 Unk Hex |
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02.00.00.00 Bismutoplagionite* 5PbS.4Bi2S3 Unk Ortho |
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02.00.00.00 Bravoite? (Fe,Ni,Co)S2 P a3 2/m 3 |
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02.00.00.00 Colimaite K3VS4 P nma 2/m 2/m 2/m |
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02.00.00.00 Dayingite* CuCoPtS4 F m3m 4/m 3 2/m |
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02.00.00.00 Dilithium* Li2Te P 222 2 2 2 |
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02.00.00.00 Dzhezkazganite* (Pb,Cu,Rh)S2(?) P a3? 2/m 3 |
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02.00.00.00 Ferdisilicite* FeSi2 P 4/mmm 4/m 2/m 2/m |
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02.00.00.00 Fersilicite* FeSi P 213 2 3 |
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02.00.00.00 Horobetsuite* (Bi,Sb)2S3 Pbnm 2/m 2/m 2/m |
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02.00.00.00 Horomanite Fe6Ni3S8 P 4/mmm 4mm |
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02.00.00.00 Imgreite? NiTe P 63/mmc 6/m 2/m 2/m |
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02.00.00.00 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic |
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02.00.00.00 Isochalcopyrite? Cu8Fe9S16 Unk Cubic |
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02.00.00.00 Jaipurite* CoS P 63/mmc 6/m 2/m 2/m |
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02.00.00.00 Kitaibelite? Ag10PbBi30S51 Mono ? Mono |
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02.00.00.00 Kurilite? (Ag,Au)2(Te,Se,S) P m3n,P 43n Cubic |
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02.00.00.00 Plumosite* Pb2Sb2S5 Mono |
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02.00.00.00 Protojoseite* Bi4TeS2(?) R 3m 3 2/m |
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02.00.00.00 Samaniite Cu2Fe5Ni2S8 P 41/mmm 4mm |
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02.00.00.00 Stibioenargite* Cu3(Sb,As)S4 Unk Ortho |
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02.00.00.00 Sztrokayite* Bi3TeS2 Trig ? Trig |
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02.00.00.00 Volfsonite* Cu10CuFeFe2Sn3S16 P 42m-,P 4212 Tetra |
| 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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02.XX.00 Isochalcopyrite? Cu8Fe9S16 Unk Cubic |
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02.XX.00 Bayankhanite? Cu6HgS4 Unk Hex |
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02.XX.00 Bravoite? (Fe,Ni,Co)S2 P a3 2/m 3 |
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02.XX.00 Dzhezkazganite* (Pb,Cu,Rh)S2(?) P a3? 2/m 3 |
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02.XX.00 Dilithium* Li2Te P 222 2 2 2 |
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02.XX.00 Horobetsuite* (Bi,Sb)2S3 Pbnm 2/m 2/m 2/m |
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02.XX.00 Horsfordite? Cu5Sb Unk Cubic |
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02.XX.00 Kurilite? (Ag,Au)2(Te,Se,S) P m3n,P 43n Cubic |
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02.XX.00 Imgreite? NiTe P 63/mmc 6/m 2/m 2/m |
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02.XX.00 Matraite? ZnS R 3m 3m |
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02.XX.00 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic |
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02.XX.00 Kitaibelite? Ag10PbBi30S51 Mono ? Mono |
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02.XX.00 Jeromite? As(S,Se)2 None |
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02.XX.00 Parajamesonite? Pb4FeSb6S14 Unk Ortho |
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02.XX.00 Volfsonite* Cu10CuFeFe2Sn3S16 P 42m-,P 4212 Tetra |
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02.XX.00 Prassoite Rh17S15(?) P m3m 4/m 3 2/m |
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02.XX.00 Sakharovaite? (Pb,Fe)(Bi,Sb)2S4 Mono |
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02.XX.00 Samaniite Cu2Fe5Ni2S8 P 41/mmm 4mm |
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02.XX.00 Tazieffite! Pb20Cd2(As,Bi)22S50Cl10 C 2/c 2/m |
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02.XX.00 Horomanite Fe6Ni3S8 P 4/mmm 4mm |
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Other Iridisite Information
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| 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
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Iridisite
(Ir,Cu,Rh,Ni,Pt)S2
Dana No: 02.00.00.00 Strunz No: 02.XX.00
Locality:
Notes:
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