Rhodium Mineral Data + Say RHODIUM

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 Synonym: Synonym: ICSD 64991
  PDF 5-685
 

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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 - HexoctahedralH-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),
Click Here for Large Rhodium Structure Window Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.7-83, Second edition. Interscience Publishers, New York, New York, Cubic closest packed, ccp, structure

 

Physical Properties of Rhodium

Help on Color: Color: Tin white.
Help on Density: Density: 16.51
Help on Diaphaniety: Diaphaniety: 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
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120%
R              
 

Calculated Properties of Rhodium

Help on Electron Density: Electron Density:

relectron=12.3 gm/cc
note: rRhodium =14.6 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.13088
Boson Index = 0.86912
Help on Photoelectric: Photoelectric:

PERhodium = 734.92 barns/electron
U=PERhodium x relectron=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: 1.2.1.3 (1)Native Elements
  (1.2)with platinum group metals and alloys
  (1.2.1)Platinum group (Space Group Fm3m)
 
1.2.1.1 Platinum Pt F m3m 4/m 3 2/m
 
1.2.1.2 Iridium (Ir,Os,Ru,Pt) F m3m 4/m 3 2/m
 
1.2.1.3 Rhodium (Rh,Pt) F m3m 4/m 3 2/m
 
1.2.1.4 Palladium Pd,Pt F m3m 4/m 3 2/m
Help on Strunz Class: Strunz Class: I/A.14-10 I - Elements
  I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides
  I/A.14 - Platinum series
 
I/A.14-10 Rhodium (Rh,Pt) F m3m 4/m 3 2/m
 
I/A.14-20 Palladium Pd,Pt F m3m 4/m 3 2/m
 
I/A.14-30 Iridium (Ir,Os,Ru,Pt) F m3m 4/m 3 2/m
 
I/A.14-70 Platinum Pt F m3m 4/m 3 2/m
 
I/A.14-80 Yixunite! Pt3In P m3m 4/m 3 2/m
 
I/A.14-85 Damiaoite! PtIn2 F m3m 4/m 3 2/m
 
I/A.14-90 Hongshiite* PtCu R 3m 3 2/m
 
I/A.14-100 Skaergaardite! CuPd P 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 - Applied Mineralogy 3 -Athena 4 - Crocoite.com Mineral Locations 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris

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Rhodium

(Rh,Pt)
Dana No: 1.2.1.3 Strunz No: I/A.14-10
Locality:

 

Notes:

 
 
   
 
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