General Iron Information
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Chemical Formula: |
Fe |
Composition: |
Molecular Weight = 55.85 gm |
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Iron 100.00 % Fe |
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______ |
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100.00 % |
Empirical Formula: |
Fe0+ |
Environment: |
In meteorites and rarely basalts that have intruded carbon-rich sediments. |
IMA Status: |
Valid Species (Pre IMA) 900 BC (Dana # Added) |
Locality: |
Asteroid fragments and in German and Greenland basalts. Link to MinDat.org Location Data. |
Name Origin: |
Probably Anglo-Saxon in origin. |
Synonym: |
Eisen |
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Fer |
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ICSD 64795 |
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PDF 6-696 |
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Iron Image |
Images:
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Iron
Comments: Specimen of volcanic rock containing dark gray grains of native Iron. This locality is one of the very few known localities for terrestrial native iron.
Location: Disko Island, Greenland.
Scale: Picture size 1 cm.
© John Veevaert |
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Iron Crystallography
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Cell Dimensions: |
a = 2.874, Z = 2; V = 23.74 Den(Calc)= 7.81 |
Crystal System: |
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I m3m |
X Ray Diffraction: |
By Intensity(I/Io): 2.0268(1), 1.1702(0.3), 1.4332(0.2), |
Crystal Structure:
Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
A - Atoms On/Off
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Help on Above
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Wilburn D R , Bassett W A , American Mineralogist , 63 (1978) p.591-596, Hydrostatic compression of iron and related compounds: An overview, P = 1 Kbar
View Additional jPOWD Structure files for Iron
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Physical Properties of Iron
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Cleavage: |
[001] Perfect, [010] Perfect, [100] Perfect |
Color: |
Iron black, Dark gray, Steel gray. |
Density: |
7.3 - 7.9, Average = 7.6 |
Diaphaniety: |
Opaque |
Fracture: |
Hackly - Jagged, torn surfaces, (e.g. fractured metals). |
Habit: |
Disseminated - Occurs in small, distinct particles dispersed in matrix. |
Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
Hardness: |
4-5 - Fluorite-Apatite |
Luminescence: |
None. |
Luster: |
Metallic |
Magnetism: |
Naturally strong |
Streak: |
gray |
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Optical Properties of Iron
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RL Color: |
White. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Iron in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
51.30 |
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| 420 nm |
52.20 |
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| 440 nm |
53.10 |
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| 460 nm |
54.00 |
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| 480 nm |
54.80 |
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| 500 nm |
55.60 |
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| 520 nm |
56.20 |
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| 540 nm |
56.80 |
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| 560 nm |
57.30 |
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| 580 nm |
57.80 |
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| 600 nm |
58.40 |
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| 620 nm |
59.00 |
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| 640 nm |
59.60 |
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| 660 nm |
60.20 |
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| 680 nm |
61.00 |
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| 700 nm |
61.80 |
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Calculated Relative Intensity Colors of Iron in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
170% |
| R |
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Calculated Properties of Iron
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Electron Density: |
relectron=7.27 gm/cc note: rIron =7.81 gm/cc. |
Fermion Index |
Fermion Index = 0.0212 Boson Index = 0.9788 |
Photoelectric: |
PEIron = 31.03 barns/electron U=PEIron x relectron= 225.68 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Iron is Not Radioactive |
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Iron Classification
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Dana Class: |
1.1.11.0 (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.07-10 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 Iron Information
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References: |
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Iron :
1 -Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 -Athena
4 - Crocoite.com Mineral Locations
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 - WWW-MINCRYST
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Print or Cut-and-Paste your Iron Specimen Label here :
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Iron
Fe
Dana No: 1.1.11.0 Strunz No: I/A.07-10
Locality:
Notes:
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