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Ferchromide Mineral Data
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General Ferchromide Information
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 Chemical Formula: |
Cr3Fe1-x(x=0,6) |
| Composition: |
Molecular Weight = 178.33 gm |
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Chromium 87.47 % Cr |
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Iron 12.53 % Fe |
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______ |
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100.00 % |
| Empirical Formula: |
Cr3Fe0+0.4 |
| Environment: |
In quartz veins within brecciated amphibolites and schist. |
| IMA Status: |
Approved IMA 1986 |
| Locality: |
Efim Area, Kumak ore field, Orenburgskaya Oblast', Urals Region, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
For the chemical composition, FERrum, iron, and CHROMium. |
| Name Pronunciation: |
Ferchromide + Pronunciation  |
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Ferchromide Image |
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Images:
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Ferchromide Crystallography
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| Cell Dimensions: |
a = 2.882, Z = 1; V = 23.94 Den(Calc)= 12.37 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: P m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.04(1), 1.17(0.9), 0.77(0.8), |
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Physical Properties of Ferchromide
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| Cleavage: |
None |
| Color: |
Gray white. |
| Diaphaneity: |
Opaque |
| Hardness: |
6.5 - Pyrite |
| Luster: |
Metallic |
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Optical Properties of Ferchromide
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| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Ferchromide in Air
| λ |
R |
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∑ R(λ) |
| 440 nm |
55.20 |
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| 460 nm |
55.40 |
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| 480 nm |
56.20 |
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| 500 nm |
56.90 |
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| 520 nm |
58.00 |
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| 540 nm |
58.80 |
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| 560 nm |
59.50 |
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| 580 nm |
60.40 |
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| 600 nm |
61.00 |
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| 620 nm |
61.00 |
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| 640 nm |
61.80 |
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| 680 nm |
62.80 |
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| 700 nm |
63.20 |
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Calculated Relative Intensity Colors of Ferchromide in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
| R |
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Calculated Properties of Ferchromide
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| Electron Density: |
Bulk Density (Electron Density)=11.4 gm/cc
note: Specific Gravity of Ferchromide =12.4 gm/cc.
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| Fermion Index: |
Fermion Index = 0.08
Boson Index = 0.92 |
| Photoelectric: |
PEFerchromide = 24.25 barns/electron
U=PEFerchromide x rElectron Density= 277.17 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ferchromide is Not Radioactive |
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Ferchromide Classification
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| Dana Class: |
01.01.12.03 (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 Ferchromide Information
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| References: |
PHYS. PROP.(Am.Min.,Vol.73,p191,1988) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Ferchromide :
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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Print or Cut-and-Paste your Ferchromide Specimen Label here :
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Ferchromide
Cr3Fe1-x(x=0,6)
Dana No: 01.01.12.03 Strunz No: 01.AE.15
Locality:
Notes:
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