Mineralogy Database

Chromferide Mineral Data

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General Chromferide Information

Help on Chemical  Formula: Chemical Formula: Fe3Cr1-x (x=0,6)
Help on Composition: Composition: Molecular Weight = 188.34 gm
   Chromium  11.04 %  Cr
   Iron      88.96 %  Fe
            100.00 % 
Help on Empirical Formula: Empirical Formula: Fe0+3Cr0.4
Help on Environment: Environment: In quartz veins within brecciated amphibolites and shists.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Southern Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the chemical composition, CHROMium and FERrum.

Chromferide Image

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Comments: Irregular nugget of chromferide.
Location: Verchnevinsk, Ural, Russia. Scale: Nugget Size 1.5 mm.
© Thomas Witzke

Chromferide Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 2.859, Z = 0.5; V = 23.37 Den(Calc)= 6.69
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: P m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.16(1), 2.02(1), 1.43(0.8),

Physical Properties of Chromferide

Help on Cleavage: Cleavage: None
Help on Color: Color: Gray white.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Ferromagnetic

Optical Properties of Chromferide

Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Chromferide in Air
λ R  ∑ R(λ) 
 440 nm   50.40   
 460 nm   50.90 
 480 nm   51.40 
 500 nm   52.60 
 520 nm   53.00 
 540 nm   55.30 
 560 nm   56.50 
 580 nm   56.90 
 600 nm   57.90 
 620 nm   58.30 
 640 nm   59.00 
 660 nm   60.00 
 680 nm   60.70 
 700 nm   60.80 
Calculated Relative Intensity Colors of Chromferide in Air
   0%   20%   40%   60%   80% 100% 120% 140% 160% 180%

Calculated Properties of Chromferide

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.22 gm/cc
note: Specific Gravity of Chromferide =6.69 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEChromferide = 30.18 barns/electron
U=PEChromferide x rElectron Density= 187.84 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chromferide is Not Radioactive

Chromferide Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.01)with metallic elements other than the platinum group
  (01.01.12)Dana Group Chromium Cr I m3m 4/m 3 2/m Chromferide Fe3Cr1-x(x=0,6) P m3m 4/m 3 2/m Ferchromide Cr3Fe1-x(x=0,6) P m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 01.AE.15 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AE -Iron-chromium family
01.AE.15 Chromferide Fe3Cr1-x(x=0,6) P m3m 4/m 3 2/m
01.AE.15 Ferchromide Cr3Fe1-x(x=0,6) P m3m 4/m 3 2/m
01.AE.15 Wairauite CoFe P m3m 4/m 3 2/m

Other Chromferide Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.73,p190,1988) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Chromferide :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Chromferide Specimen Label here :


Fe3Cr1-x (x=0,6)
Dana No: Strunz No: 01.AE.15





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