Mineralogy Database

Rhodium Mineral Data

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General Rhodium Information

Help on Chemical  Formula: Chemical Formula: (Rh,Pt)
Help on Composition: Composition: Molecular Weight = 125.95 gm
   Platinum  38.72 %  Pt
   Rhodium   61.28 %  Rh
            100.00 % 
Help on Empirical Formula: Empirical Formula: Rh0.75Pt0.25
Help on Environment: Environment: Single grain found in a heavy mineral concentrate from a cummulate ultrabasic intrusion.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: J-M Reef, Stillwater complex, Nye County, Montana, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek, rhodon = "rose" in allusion to the colored salts.
Help on Name Pronunciation: Name Pronunciation: Rhodium Say RHODIUM
Help on Synonym: Synonym: ICSD 64991
  PDF 5-685

Rhodium Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 3.856, Z = 4; V = 57.33 Den(Calc)= 14.59
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 0.7874(1), 0.8623(0.8), 0.8847(0.7),

Physical Properties of Rhodium

Help on Color: Color: Tin white.
Help on Density: Density: 16.51
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Metallic

Optical Properties of Rhodium

Help on RL Color: RL Color: Bright white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Rhodium in Air
λ R  ∑ R(λ) 
 470 nm   75.20   
 546 nm   72.60 
 589 nm   73.30 
 650 nm   75.70 
Calculated Relative Intensity Colors of Rhodium in Air
   0%   20%   40%   60%   80% 100% 120%

Calculated Properties of Rhodium

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=12.3 gm/cc
note: Specific Gravity of Rhodium =14.6 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.13
Boson Index = 0.87
Help on Photoelectric: Photoelectric: PERhodium = 734.92 barns/electron
U=PERhodium x rElectron Density=9,066.73 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rhodium is Not Radioactive

Rhodium Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.02)with platinum group metals and alloys
  (01.02.01)Platinum group (Space Group Fm3m) Platinum Pt F m3m 4/m 3 2/m Iridium (Ir,Os,Ru,Pt) F m3m 4/m 3 2/m Rhodium (Rh,Pt) F m3m 4/m 3 2/m Palladium Pd,Pt F m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 01.AF.10 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AF -Platinum-group elements
01.AF.10 Palladium Pd,Pt F m3m 4/m 3 2/m
01.AF.10 Iridium (Ir,Os,Ru,Pt) F m3m 4/m 3 2/m
01.AF.10 Rhodium (Rh,Pt) F m3m 4/m 3 2/m
01.AF.10 Platinum Pt F m3m 4/m 3 2/m

Other Rhodium 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 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

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Dana No: Strunz No: 01.AF.10





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