Iridisite Mineral Data (original) (raw)
General Iridisite Information
Chemical Formula:
(Ir,Cu,Rh,Ni,Pt)S2
Composition:
Molecular Weight = 186.82 gm
Copper 10.20 % Cu
Nickel 3.14 % Ni
Iridium 30.87 % Ir
Platinum 10.44 % Pt
Rhodium 11.02 % Rh
Sulfur 34.33 % S
______
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:
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
Standardized Intensity (100%) Reflection Spectra of Iridisite in Air
| λ | R1 | R 2 |  |
∑ R1(λ) | ∑ R2(λ) |
|---|---|---|---|---|---|
| 402 nm | 43.70 | 43.40 |  |
||
| 439 nm | 45.40 | 44.00 |  |
||
| 480 nm | 45.40 | 44.10 |  |
||
| 495 nm | 46.30 | 44.40 |  |
||
| 546 nm | 47.30 | 44.70 |  |
||
| 590 nm | 47.30 | 44.80 |  |
||
| 624 nm | 47.40 | 45.20 |  |
||
| 644 nm | 47.10 | 45.40 |  |
||
| 657 nm | 46.70 | 44.70 |  |
Calculated Relative Intensity Colors of Iridisite in Air
| RelativeIntensity | 0% | 30% | 60% | 90% | 100% | 120% | 150% | 180% | 200% |
|---|---|---|---|---|---|---|---|---|---|
| R1 | |||||||||
| R2 |
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
(02.00)Without Dana Classification Numbers
(02.00.00)Sulfide
02.00.00.00 Argentite* Ag2S I m3m 4/m 3 2/m
02.00.00.00 Bayankhanite? Cu6HgS4 Unk Hex
02.00.00.00 Bismutoplagionite* 5PbS.4Bi2S3 Unk Ortho
02.00.00.00 Bravoite? (Fe,Ni,Co)S2 P a3 2/m 3
02.00.00.00 Colimaite K3VS4 P nma 2/m 2/m 2/m
02.00.00.00 Dayingite* CuCoPtS4 F m3m 4/m 3 2/m
02.00.00.00 Dilithium* Li2Te P 222 2 2 2
02.00.00.00 Dzhezkazganite* (Pb,Cu,Rh)S2(?) P a3? 2/m 3
02.00.00.00 Ferdisilicite* FeSi2 P 4/mmm 4/m 2/m 2/m
02.00.00.00 Fersilicite* FeSi P 213 2 3
02.00.00.00 Horobetsuite* (Bi,Sb)2S3 Pbnm 2/m 2/m 2/m
02.00.00.00 Horomanite Fe6Ni3S8 P 4/mmm 4mm
02.00.00.00 Imgreite? NiTe P 63/mmc 6/m 2/m 2/m
02.00.00.00 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic
02.00.00.00 Isochalcopyrite? Cu8Fe9S16 Unk Cubic
02.00.00.00 Jaipurite* CoS P 63/mmc 6/m 2/m 2/m
02.00.00.00 Kitaibelite? Ag10PbBi30S51 Mono ? Mono
02.00.00.00 Kurilite? (Ag,Au)2(Te,Se,S) P m3n,P 43n Cubic
02.00.00.00 Plumosite* Pb2Sb2S5 Mono
02.00.00.00 Protojoseite* Bi4TeS2(?) R 3m 3 2/m
02.00.00.00 Samaniite Cu2Fe5Ni2S8 P 41/mmm 4mm
02.00.00.00 Stibioenargite* Cu3(Sb,As)S4 Unk Ortho
02.00.00.00 Sztrokayite* Bi3TeS2 Trig ? Trig
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
02.X - Unclassified Strunz SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarse
02.XX -Sulfide
02.XX.00 Isochalcopyrite? Cu8Fe9S16 Unk Cubic
02.XX.00 Bayankhanite? Cu6HgS4 Unk Hex
02.XX.00 Bravoite? (Fe,Ni,Co)S2 P a3 2/m 3
02.XX.00 Dzhezkazganite* (Pb,Cu,Rh)S2(?) P a3? 2/m 3
02.XX.00 Dilithium* Li2Te P 222 2 2 2
02.XX.00 Horobetsuite* (Bi,Sb)2S3 Pbnm 2/m 2/m 2/m
02.XX.00 Horsfordite? Cu5Sb Unk Cubic
02.XX.00 Kurilite? (Ag,Au)2(Te,Se,S) P m3n,P 43n Cubic
02.XX.00 Imgreite? NiTe P 63/mmc 6/m 2/m 2/m
02.XX.00 Matraite? ZnS R 3m 3m
02.XX.00 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic
02.XX.00 Kitaibelite? Ag10PbBi30S51 Mono ? Mono
02.XX.00 Jeromite? As(S,Se)2 None
02.XX.00 Parajamesonite? Pb4FeSb6S14 Unk Ortho
02.XX.00 Volfsonite* Cu10CuFeFe2Sn3S16 P 42m-,P 4212 Tetra
02.XX.00 Prassoite Rh17S15(?) P m3m 4/m 3 2/m
02.XX.00 Sakharovaite? (Pb,Fe)(Bi,Sb)2S4 Mono
02.XX.00 Samaniite Cu2Fe5Ni2S8 P 41/mmm 4mm
02.XX.00 Tazieffite! Pb20Cd2(As,Bi)22S50Cl10 C 2/c 2/m
02.XX.00 Horomanite Fe6Ni3S8 P 4/mmm 4mm
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
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Iridisite
(Ir,Cu,Rh,Ni,Pt)S2
Dana No: 02.00.00.00 Strunz No: 02.XX.00
Locality:
Notes: