General Kamacite Information
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Chemical Formula: |
alpha-(Fe,Ni) |
Composition: |
Molecular Weight = 56.13 gm |
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Iron 89.54 % Fe |
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Nickel 10.46 % Ni |
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______ |
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100.00 % |
Empirical Formula: |
Fe0+0.9Ni0.1 |
Environment: |
Major constituent of iron meteorites. |
IMA Status: |
Valid Species (Pre-IMA) 1861 |
Locality: |
Disko Island, Uivfaq, Blaafjeld, Greenland Link to MinDat.org Location Data. |
Name Origin: |
Named from the Greek for "shaft" or "lath". |
Synonym: |
Plessite - Taenite and Kamacite |
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Kamacite Image |
Images:
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Kamacite Carlsbergite
Comments: Polished section showing a small light gray elongated inclusion of carlsbergite in massive kamacite.
Location: Kenton County meteorite, Kenton Co., Kentucky, USA.
Scale: Picture size 0.08 mm.
© Thomas Witzke / Abraxas-Verlag |
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Images:
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Images:
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Images:
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Kamacite Taenite Troilite
Comments: Polished and acid etched slice, with crust, illustrating Widmanstaaten lines, with taenite darker areas between kamacite crystals, with tarnished troilite inclusions, in fine octahedrite meteorite.
Location: Gibeon Meteorite, found 1836, Great Namaqualand, Hardap, Namibia.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species |
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Kamacite Crystallography
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Cell Dimensions: |
a = 8.603, Z = 54; V = 636.72 Den(Calc)= 7.90 |
Crystal System: |
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m |
X Ray Diffraction: |
By Intensity(I/Io): 2.03(1), 1.967(0.6), 1.435(0.3), |
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Physical Properties of Kamacite
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Cleavage: |
[???] Indistinct |
Color: |
Iron black, Steel gray. |
Density: |
7.9 |
Diaphaniety: |
Opaque |
Fracture: |
Hackly - Jagged, torn surfaces, (e.g. fractured metals). |
Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
Hardness: |
4 - Fluorite |
Luster: |
Metallic |
Streak: |
gray |
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Calculated Properties of Kamacite
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Electron Density: |
relectron=7.37 gm/cc note: rKamacite =7.90 gm/cc. |
Fermion Index |
Fermion Index = 0.02016 Boson Index = 0.97984 |
Photoelectric: |
PEKamacite = 32.05 barns/electron U=PEKamacite x relectron= 236.35 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kamacite is Not Radioactive |
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Kamacite Classification
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Dana Class: |
1.1.11.1 (1)Native Elements |
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(1.1)with metallic elements other than the platinum group |
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(1.1.11)Iron-Nickel group |
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1.1.11.0 Iron! Fe I m3m 4/m 3 2/m |
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1.1.11.1 Kamacite alpha-(Fe,Ni) F m3m 4/m 3 2/m |
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1.1.11.2 Taenite gamma-(Fe,Ni) F m3m 4/m 3 2/m |
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1.1.11.3 Tetrataenite FeNi P 4/mmm 4/m 2/m 2/m |
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1.1.11.4 Awaruite Ni2FetoNi3Fe P m3m 4/m 3 2/m |
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1.1.11.5 Nickel Ni F m3m 4/m 3 2/m |
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1.1.11.6 Wairauite CoFe P m3m 4/m 3 2/m |
Strunz Class: |
I/A.07-20 I - Elements |
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I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides |
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I/A.07 - Iron series |
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I/A.07-10 Iron Fe I m3m 4/m 3 2/m |
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I/A.07-20 Kamacite alpha-(Fe,Ni) F m3m 4/m 3 2/m |
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I/A.07-30 Wairauite CoFe P m3m 4/m 3 2/m |
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Other Kamacite Information
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References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Kamacite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - Crocoite.com Mineral Locations
4 - EUROmin Project
5 -Google Images
6 -Google Scholar
7 -Handbook of Mineralogy (UofA)
8 -MinDAT
9 -MinMax(Deutsch)
10 -MinMax(English)
11 - Mineral and Gemstone Kingdom
12 -Mineralienatlas (Deutsch)
13 -QUT Mineral Atlas
14 -École des Mines de Paris
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Print or Cut-and-Paste your Kamacite Specimen Label here :
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Kamacite
alpha-(Fe,Ni)
Dana No: 1.1.11.1 Strunz No: I/A.07-20
Locality:
Notes:
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