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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Ferroskutterudite Mineral Data
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General Ferroskutterudite Information
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Chemical Formula: |
(Fe,Co)As3 |
Composition: |
Molecular Weight = 276.94 gm |
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Iron 12.10 % Fe |
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Cobalt 8.38 % Co |
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Nickel 0.04 % Ni |
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Arsenic 78.13 % As |
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Sulfur 1.34 % S |
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______ |
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100.00 % |
Empirical Formula: |
Fe2+0.6Co0.39Ni0.002As2.88S0.11 |
Environment: |
Found in dolomite-calcite veins with other arsenides. Skutterudite group. |
IMA Status: |
Approved IMA 2006 (Dana # Added) |
Locality: |
Konsomolsk mine, Talnakh, Norilsk, Russia Link to MinDat.org Location Data. |
Name Origin: |
Named as the Fe analog of skutterudite. |
Synonym: |
IMA2006-032 |
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Ferroskutterudite Crystallography
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Cell Dimensions: |
a = 8.17, Z = 8; V = 545.34 Den(Calc)= 6.75 |
Crystal System: |
Isometric - Diploidal H-M Symbol (2/m 3) Space Group: Im3 |
X Ray Diffraction: |
By Intensity(I/Io): 2.858(1)(310), 2.182(0.9)(321), 1.602(0.7)(510),1.829(0.7)(420), 1.402(0.6)(530), 1.667(0.5)(422), |
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Physical Properties of Ferroskutterudite
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Color: |
Tin white. |
Diaphaneity: |
Opaque |
Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
Hardness: |
6-6.5 - Orthoclase-Pyrite |
Luster: |
Metallic |
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Optical Properties of Ferroskutterudite
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RL Anisotrophism: |
None. |
RL Bireflectance: |
None. |
RL Color: |
White. |
RL Pleochroism: |
None. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Ferroskutterudite in Air
λ |
R |
![](../images/Reflect_scale_v.gif) |
∑ R(λ) |
400 nm |
57.20 |
![](../images/400nm.BMP) |
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420 nm |
57.60 |
![](../images/420nm.BMP) |
440 nm |
58.00 |
![](../images/440nm.BMP) |
460 nm |
58.20 |
![](../images/460nm.BMP) |
470 nm |
58.20 |
![](../images/470nm.BMP) |
480 nm |
58.20 |
![](../images/480nm.BMP) |
500 nm |
58.00 |
![](../images/500nm.BMP) |
520 nm |
57.60 |
![](../images/520nm.BMP) |
540 nm |
57.30 |
![](../images/540nm.BMP) |
546 nm |
57.20 |
![](../images/546nm.BMP) |
560 nm |
56.90 |
![](../images/560nm.BMP) |
580 nm |
56.40 |
![](../images/580nm.BMP) |
589 nm |
56.20 |
![](../images/589nm.BMP) |
600 nm |
56.00 |
![](../images/600nm.BMP) |
620 nm |
55.50 |
![](../images/620nm.BMP) |
640 nm |
55.20 |
![](../images/640nm.BMP) |
650 nm |
54.90 |
![](../images/650nm.BMP) |
660 nm |
54.70 |
![](../images/660nm.BMP) |
680 nm |
54.30 |
![](../images/680nm.BMP) |
700 nm |
53.80 |
![](../images/700nm.BMP) |
Calculated Relative Intensity Colors of Ferroskutterudite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
R |
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Calculated Properties of Ferroskutterudite
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Electron Density: |
Bulk Density (Electron Density)=6.02 gm/cc note: Specific Gravity of Ferroskutterudite =6.75 gm/cc. |
Fermion Index: |
Fermion Index = 0.0026706206 Boson Index = 0.9973293794 |
Photoelectric: |
PEFerroskutterudite = 63.60 barns/electron U=PEFerroskutterudite x rElectron Density= 382.77 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ferroskutterudite is Not Radioactive |
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Ferroskutterudite Classification
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Dana Class: |
02.12.17.04 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.17)Skutterudite Series |
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02.12.17.01 Skutterudite (Co,Ni)As3-x I m3 2/m 3 |
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02.12.17.02 Nickelskutterudite (Ni,Co)As3-x I m3 2/m 3 |
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02.12.17.03 Kieftite CoSb3 I m3 2/m 3 |
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02.12.17.04 Ferroskutterudite! (Fe,Co)As3 Im3 2/m 3 |
Strunz Class: |
02.EC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EC -M:S = 1:>2 |
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02.EC.05 Dienerite? Ni3As I 43d 4 3m |
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02.EC.05 Kieftite CoSb3 I m3 2/m 3 |
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02.EC.05 Nickelskutterudite (Ni,Co)As3-x I m3 2/m 3 |
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02.EC.05 Skutterudite (Co,Ni)As3-x I m3 2/m 3 |
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02.EC.05 Ferroskutterudite! (Fe,Co)As3 Im3 2/m 3 |
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Other Ferroskutterudite Information
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References: |
NAME( AmMin, v93:1687) PHYS. PROP.(AmMin, v93:1687) OPTIC PROP.(AmMin, v93:1687) |
See Also: |
Links to other databases for Ferroskutterudite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Ferroskutterudite Specimen Label here :
Ferroskutterudite
(Fe,Co)As3
Dana No: 02.12.17.04 Strunz No: 02.EC.05
Locality:
Notes:
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