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Rhodium Mineral Data
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General Rhodium Information
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 Chemical Formula: |
(Rh,Pt) |
| Composition: |
Molecular Weight = 125.95 gm |
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Platinum 38.72 % Pt |
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Rhodium 61.28 % Rh |
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______ |
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100.00 % |
| Empirical Formula: |
Rh0.75Pt0.25 |
| Environment: |
Single grain found in a heavy mineral concentrate from a cummulate ultrabasic intrusion. |
| IMA Status: |
Approved IMA 1974 |
| Locality: |
J-M Reef, Stillwater complex, Nye County, Montana, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek, rhodon = "rose" in allusion to the colored salts. |
| Name Pronunciation: |
Rhodium  |
| Synonym: |
ICSD 64991 |
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PDF 5-685 |
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Rhodium Crystallography
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| Cell Dimensions: |
a = 3.856, Z = 4; V = 57.33 Den(Calc)= 14.59 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 0.7874(1), 0.8623(0.8), 0.8847(0.7), |
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Physical Properties of Rhodium
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| Color: |
Tin white. |
| Density: |
16.51 |
| Diaphaneity: |
Opaque |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Metallic |
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Optical Properties of Rhodium
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| RL Color: |
Bright white. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Rhodium in Air
| λ |
R |
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∑ R(λ) |
| 470 nm |
75.20 |
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| 546 nm |
72.60 |
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| 589 nm |
73.30 |
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| 650 nm |
75.70 |
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Calculated Relative Intensity Colors of Rhodium in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
| R |
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Calculated Properties of Rhodium
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| Electron Density: |
Bulk Density (Electron Density)=12.3 gm/cc
note: Specific Gravity of Rhodium =14.6 gm/cc.
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| Fermion Index: |
Fermion Index = 0.13
Boson Index = 0.87 |
| Photoelectric: |
PERhodium = 734.92 barns/electron
U=PERhodium x rElectron Density=9,066.73 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rhodium is Not Radioactive |
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Rhodium Classification
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| Dana Class: |
01.02.01.03 (01)Native Elements |
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(01.02)with platinum group metals and alloys |
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(01.02.01)Platinum group (Space Group Fm3m) |
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01.02.01.01 Platinum Pt F m3m 4/m 3 2/m |
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01.02.01.02 Iridium (Ir,Os,Ru,Pt) F m3m 4/m 3 2/m |
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01.02.01.03 Rhodium (Rh,Pt) F m3m 4/m 3 2/m |
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01.02.01.04 Palladium Pd,Pt F m3m 4/m 3 2/m |
| Strunz Class: |
01.AF.10 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.A - Metals and Intermetallic Alloys |
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01.AF -Platinum-group elements |
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01.AF.10 Palladium Pd,Pt F m3m 4/m 3 2/m |
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01.AF.10 Iridium (Ir,Os,Ru,Pt) F m3m 4/m 3 2/m |
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01.AF.10 Rhodium (Rh,Pt) F m3m 4/m 3 2/m |
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01.AF.10 Platinum Pt F m3m 4/m 3 2/m |
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Other Rhodium Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Rhodium :
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 Rhodium Specimen Label here :
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Rhodium
(Rh,Pt)
Dana No: 01.02.01.03 Strunz No: 01.AF.10
Locality:
Notes:
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