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Chromferide Mineral Data
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General Chromferide Information
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 Chemical Formula: |
Fe3Cr1-x (x=0,6) |
| Composition: |
Molecular Weight = 188.34 gm |
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Chromium 11.04 % Cr |
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Iron 88.96 % Fe |
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______ |
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100.00 % |
| Empirical Formula: |
Fe0+3Cr0.4 |
| Environment: |
In quartz veins within brecciated amphibolites and shists. |
| IMA Status: |
Approved IMA 1986 |
| Locality: |
Southern Ural Mountains, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the chemical composition, CHROMium and FERrum. |
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Chromferide Image |
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Images:
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Chromferide
Comments: Irregular nugget of chromferide.
Location: Verchnevinsk, Ural, Russia.
Scale: Nugget Size 1.5 mm.
© Thomas Witzke |
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Chromferide Crystallography
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| Cell Dimensions: |
a = 2.859, Z = 0.5; V = 23.37 Den(Calc)= 6.69 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: P m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 1.16(1), 2.02(1), 1.43(0.8), |
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Physical Properties of Chromferide
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| Cleavage: |
None |
| Color: |
Gray white. |
| Diaphaneity: |
Opaque |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
| Magnetism: |
Ferromagnetic |
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Optical Properties of Chromferide
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| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Chromferide in Air
| λ |
R |
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∑ R(λ) |
| 440 nm |
50.40 |
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| 460 nm |
50.90 |
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| 480 nm |
51.40 |
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| 500 nm |
52.60 |
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| 520 nm |
53.00 |
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| 540 nm |
55.30 |
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| 560 nm |
56.50 |
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| 580 nm |
56.90 |
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| 600 nm |
57.90 |
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| 620 nm |
58.30 |
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| 640 nm |
59.00 |
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| 660 nm |
60.00 |
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| 680 nm |
60.70 |
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| 700 nm |
60.80 |
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Calculated Relative Intensity Colors of Chromferide in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
| R |
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Calculated Properties of Chromferide
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| Electron Density: |
Bulk Density (Electron Density)=6.22 gm/cc
note: Specific Gravity of Chromferide =6.69 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEChromferide = 30.18 barns/electron
U=PEChromferide x rElectron Density= 187.84 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chromferide is Not Radioactive |
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Chromferide Classification
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| Dana Class: |
01.01.12.02 (01)Native Elements |
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(01.01)with metallic elements other than the platinum group |
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(01.01.12)Dana Group |
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01.01.12.01 Chromium Cr I m3m 4/m 3 2/m |
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01.01.12.02 Chromferide Fe3Cr1-x(x=0,6) P m3m 4/m 3 2/m |
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01.01.12.03 Ferchromide Cr3Fe1-x(x=0,6) P m3m 4/m 3 2/m |
| Strunz Class: |
01.AE.15 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.AE -Iron-chromium family |
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01.AE.15 Chromferide Fe3Cr1-x(x=0,6) P m3m 4/m 3 2/m |
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01.AE.15 Ferchromide Cr3Fe1-x(x=0,6) P m3m 4/m 3 2/m |
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01.AE.15 Wairauite CoFe P m3m 4/m 3 2/m |
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Other Chromferide Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.73,p190,1988) OPTIC PROP.(AntBidBlaNic1) |
| 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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Chromferide
Fe3Cr1-x (x=0,6)
Dana No: 01.01.12.02 Strunz No: 01.AE.15
Locality:
Notes:
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