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Iron Mineral Data
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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. |
| Name Pronunciation: |
Iron  |
| Synonym: |
Eisen |
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Fer |
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ICSD 64795 |
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Kamacite - Ni-rich iron |
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PDF 6-696 |
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Iron Image |
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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 - Hexoctahedral H-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), |
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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 |
| Diaphaneity: |
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: |
Non-fluorescent. |
| 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: |
Bulk Density (Electron Density)=7.27 gm/cc
note: Specific Gravity of Iron =7.81 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEIron = 31.03 barns/electron
U=PEIron x rElectron Density= 225.68 barns/cc.
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| 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: |
01.01.11.00 (01)Native Elements |
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(01.01)with metallic elements other than the platinum group |
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(01.01.11)Iron-Nickel group |
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01.01.11.00 Iron! Fe I m3m 4/m 3 2/m |
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01.01.11.01 Kamacite? alpha-(Fe,Ni) F m3m 4/m 3 2/m |
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01.01.11.02 Taenite gamma-(Fe,Ni) F m3m 4/m 3 2/m |
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01.01.11.03 Tetrataenite FeNi P 4/mmm 4/m 2/m 2/m |
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01.01.11.04 Awaruite Ni2FetoNi3Fe P m3m 4/m 3 2/m |
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01.01.11.05 Nickel Ni F m3m 4/m 3 2/m |
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01.01.11.06 Wairauite CoFe P m3m 4/m 3 2/m |
| Strunz Class: |
01.AE.05 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.05 Chromium Cr I m3m 4/m 3 2/m |
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01.AE.05 Kamacite? alpha-(Fe,Ni) F m3m 4/m 3 2/m |
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01.AE.05 Iron Fe I 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 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST
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Iron
Fe
Dana No: 01.01.11.00 Strunz No: 01.AE.05
Locality:
Notes:
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