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Iron

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Formula:
Fe
Colour:
Iron-black
Lustre:
Metallic
Hardness:
Specific Gravity:
7.3 - 7.87
Crystal System:
Isometric
Member of:
Name:
Old English word for the metal.
Dimorph of:
Rare in igneous rocks. Forms the majority of the earth's core.

Nickel is commonly reported in iron in quantities up to several percents; meteoric iron generally contains at least 5%, and up to 25% to 65%, nickel. Because of the instability of iron under oxidizing conditions and the abundance of oxygen in the Earth's crust and atmosphere, practically all terrestrial iron occurs in the divalent (ferrous) or trivalent (ferric) state combined with other metals and nonmetallic elements in silicates, oxides, sulfides, etc.

Visit gemdat.org for gemological information about Iron.


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Classification of IronHide

Approved, 'Grandfathered' (first described prior to 1959)
1.AE.05

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
E : Iron-chromium family
Dana 7th ed.:
1.1.17.1
1.57

1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)

Physical Properties of IronHide

Metallic
Transparency:
Opaque
Colour:
Iron-black
Streak:
Grey
Hardness:
4½ on Mohs scale
Hardness:
VHN100=160 kg/mm2 - Vickers
Tenacity:
Malleable
Cleavage:
Imperfect/Fair
On {001}
Parting:
On (112)
Fracture:
Hackly
Density:
7.3 - 7.87 g/cm3 (Measured)    7.874 g/cm3 (Calculated)

Optical Data of IronHide

Type:
Isotropic
Colour in reflected light:
White

Chemical Properties of IronHide

Formula:
Fe
Common Impurities:
Ni,C,Co,P,Cu,S

Crystallography of IronHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Im3m
Cell Parameters:
a = 2.8664 Å
Unit Cell V:
23.55 ų (Calculated from Unit Cell)
Z:
2
Morphology:
In small blebs.
Twinning:
(111), in lamellar masses also {112}.

Type Occurrence of IronHide

Synonyms of IronHide

Other Language Names for IronHide

Afrikaans:Yster
Albanian:Hekuri
Alemannic:Eisen
Arabic:حديد
Armenian:Երկաթ
Asturian:Fierro
Azeri:Dəmir
Basque:Burdina
Belarusian:Жалеза
Belarusian (Tarashkevitsa):Жалеза
Bengali:লোহা
Bosnian (Latin Script):Željezo
Breton:Houarn
Bulgarian:Желязо
Catalan:Ferro
Chuvash:Тимĕр
Corsican:Ferru
Croatian:Željezo
Czech:Železo
Danish:Jern
Dutch:IJzer
Erzya:Кшни
Esperanto:Fero
Estonian:Raud
Finnish:Rauta
Friulian:Fier
Galician:Ferro
Guarani:Kuarepoti
Haitian:
Hakka:Thiet
Hebrew:ברזל
Hungarian:Vas
Icelandic:Járn
Ido:Fero
Indonesian:Besi
Interlingua:Ferro
Irish Gaelic:Iarann
Italian:Ferro
Japanese:
Javanese:Wesi
Kongo:Kibende
Korean:
Kurdish (Latin Script):Hesin
Latin:Ferrum
Latvian:Dzelzs
Limburgian:Iezer
Lingala:Ebendé
Lithuanian:Geležis
Lojban:tirse
Low Saxon:Iesen
Luxembourgish:Eisen
Macedonian:Железо
Malay:Besi
Maltese:Ħadid
Manx:Yiarn
Maori:Rino
Min Nan:Fe
Mongolian (Cyrillic Script):Төмөр
Norman:
Norwegian (Bokmål):Jern
Norwegian (Nynorsk):Jern
Occitan:Fèrre
Persian:آهن
Polish:Żelazo
Portuguese:Ferro
Quechua:Chuki
Ripuarian:Eisen
Romanian:Fier
Russian:Железо
Scots:Airn
Scottish Gaelic:Iarann
Serbian (Cyrillic Script):Гвожђе
Serbo-Croatian:Željezo
Sicilian:Ferru
Simplified Chinese:自然铁
Slovak:Železo
Slovenian:Železo
Spanish:Hierro
Swahili:Chuma
Swedish:Järn
Tajik (Cyrillic Script):Оҳан
Traditional Chinese:自然鐵
Turkish:Demir
Ukrainian:Залізо
Uzbek (Latin Script):Temir
Venetian:Fero
Vietnamese:Sắt
Welsh:Haearn
Yiddish:אייזן

Varieties of IronHide

CarltoniteMeteoric Iron from the Carlton meteorite.
KamaciteA nickel-rich variety of iron; α-(Fe,Ni).
The principle constituent of a typical octahedrite meteorite with about 92% iron and 7% nickel.

Compare also taenite, γ-(Ni,Fe).
MartensiteA solid-solution of carbon in alpha-iron, a deformed tetragonal phase in some meteorites and artificial steels.
WickelkmamziteA name given to kamacite surrounding accessory constituents in meteoritic irons.

Relationship of Iron to other SpeciesHide

Member of:
Other Members of this group:
SteinhardtiteAl0.38Ni0.32Fe0.30Iso. m3m (4/m 3 2/m) : Im3m
VanadiumVIso. m3m (4/m 3 2/m) : Im3m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Olivine27 photos of Iron associated with Olivine on mindat.org.
Taenite22 photos of Iron associated with Taenite on mindat.org.
Troilite19 photos of Iron associated with Troilite on mindat.org.
Kamacite17 photos of Iron associated with Kamacite on mindat.org.
Pyroxene Group16 photos of Iron associated with Pyroxene Group on mindat.org.
Hypersthene9 photos of Iron associated with Hypersthene on mindat.org.
Rutile6 photos of Iron associated with Rutile on mindat.org.
Albite-Anorthite Series4 photos of Iron associated with Albite-Anorthite Series on mindat.org.
Graphite4 photos of Iron associated with Graphite on mindat.org.
Cohenite4 photos of Iron associated with Cohenite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

1.AE.VanadiumVIso. m3m (4/m 3 2/m) : Im3m
1.AE.05MolybdenumMoIso.
1.AE.05ChromiumCrIso. m3m (4/m 3 2/m) : Im3m
1.AE.05Kamacite(Fe,Ni)Iso.
1.AE.05TungstenWIso.
1.AE.05UM2001-06-E:CrFeNiFe7Cr2Ni
1.AE.10Taenite(Fe,Ni)Iso. m3m (4/m 3 2/m) : Fm3m
1.AE.10TetrataeniteFeNiTet.
1.AE.10AntitaeniteFe3Ni
1.AE.15ChromferideFe3Cr1-x (x=0.6)Iso. m3m (4/m 3 2/m) : Pm3m
1.AE.15FerchromideCr3Fe1-xIso. m3m (4/m 3 2/m) : Pm3m
1.AE.15WairauiteCoFe
1.AE.20AwaruiteNi3FeIso. m3m (4/m 3 2/m) : Fm3m
1.AE.25JedwabiteFe7(Ta,Nb)3Hex. 6mm : P63mc
1.AE.30ManganeseMnIso. 4 3m : I4 3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

1.1CopperCuIso. m3m (4/m 3 2/m) : Fm3m
1.2SilverAgIso. m3m (4/m 3 2/m) : Fm3m
1.5GoldAuIso. m3m (4/m 3 2/m) : Fm3m
1.6AuricuprideCu3AuOrth.
1.7Tetra-auricuprideAuCuTet.
1.8ZincZnHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.9CadmiumCdHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.10DanbaiteCuZn2Iso.
1.11ZhanghengiteCuZnIso.
1.12MercuryHgTrig. 3m (3 2/m) : R3m
1.13KolymiteCu7Hg6Iso.
1.14MoschellandsbergiteAg2Hg3Iso. m3m (4/m 3 2/m)
1.15EugeniteAg11Hg2Iso.
1.16SchachneriteAg1.1Hg0.9Hex.
1.17ParaschachneriteAg3Hg2Orth.
1.18LuanheiteAg3HgHex.
1.19Weishanite(Au,Ag)3Hg2Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.20IndiumInTet.
1.21AluminiumAlIso. m3m (4/m 3 2/m) : Fm3m
1.22Khatyrkite(Cu,Zn)Al2Tet.
1.23Cupalite(Cu,Zn)AlOrth.
1.24DiamondCIso. m3m (4/m 3 2/m) : Fd3m
1.25GraphiteCHex. 6mm : P63mc
1.26ChaoiteCHex. 6/mmm (6/m 2/m 2/m) : P6/mmm
1.27LonsdaleiteCHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.28SiliconSi
1.29TinSnTet. 4/mmm (4/m 2/m 2/m) : I41/amd
1.30LeadPbIso. m3m (4/m 3 2/m) : Fm3m
1.31AnyuiiteAuPb2Tet. 4/mmm (4/m 2/m 2/m) : I4/mcm
1.31NovodnepriteAuPb3Tet. 4 2m : I4 2m
1.32LeadamalgamPb0.7Hg0.3Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
1.33ArsenicAsTrig. 3m (3 2/m) : R3m
1.34ArsenolampriteAsOrth. mmm (2/m 2/m 2/m)
1.35PaxiteCuAs2Mon.
1.36KoutekiteCu5As2Hex.
1.37DomeykiteCu3AsIso. 4 3m : I4 3d
1.38Algodonite(Cu1-xAsx)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.39NovákiteCu20AgAs10Mon.
1.40KutinaiteAg6Cu14As7 Iso.
1.41AntimonySbTrig. 3m (3 2/m) : R3m
1.42StibarsenAsSbTrig. 3m (3 2/m) : R3m
1.43ParadocrasiteSb3AsMon. 2 : B2
1.44HorsforditeCu, Sb
1.45CuprostibiteCu2(Sb,Tl)Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
1.46Allargentum(Ag1-xSbx)Hex.
1.47AurostibiteAuSb2Iso. m3 (2/m 3) : Pa3
1.48DyscrasiteAg3SbOrth. mm2 : Pmm2
1.49BismuthBiTrig. 3m (3 2/m) : R3m
1.50MaldoniteAu2BiIso. m3m (4/m 3 2/m) : Fd3m
1.51SulphurS8Orth. mmm (2/m 2/m 2/m) : Fddd
1.52RosickýiteSMon. 2/m : P2/b
1.53SeleniumSeTrig. 3 2 : P31 2 1
1.54TelluriumTeHex.
1.55ChromiumCrIso. m3m (4/m 3 2/m) : Im3m
1.56RheniumReHex.
1.58ChromferideFe3Cr1-x (x=0.6)Iso. m3m (4/m 3 2/m) : Pm3m
1.59FerchromideCr3Fe1-xIso. m3m (4/m 3 2/m) : Pm3m
1.60WairauiteCoFe
1.61NickelNiIso. m3m (4/m 3 2/m) : Fm3m
1.62Kamacite(Fe,Ni)Iso.
1.63Taenite(Fe,Ni)Iso. m3m (4/m 3 2/m) : Fm3m
1.64TetrataeniteFeNiTet.
1.65AwaruiteNi3FeIso. m3m (4/m 3 2/m) : Fm3m
1.66Palladium(Pd,Pt)
1.67PotaritePdHgTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.68PaolovitePd2SnOrth.
1.69Stannopalladinite(Pd,Cu)3Sn2Hex.
1.70CabriitePd2CuSnOrth. mmm (2/m 2/m 2/m) : Pmmm
1.71Taimyrite(Pd,Cu,Pt)3SnOrth.
1.72Atokite(Pd,Pt)3SnIso. m3m (4/m 3 2/m) : Fm3m
1.73Rustenburgite(Pt,Pd)3Sn
1.74ZvyagintsevitePd3PbIso.
1.75PlumbopalladinitePd3Pb2Hex.
1.76Osmium(Os,Ir,Ru)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.77Iridium(Ir,Os,Ru)Iso.
1.82PlatinumPtIso. m3m (4/m 3 2/m) : Fm3m
1.83HongshiitePtCuTrig.
1.84NiggliitePtSnHex.
1.85IsoferroplatinumPt3FeIso.
1.86TetraferroplatinumPtFeTet.
1.87TulameenitePt2CuFeTet.
1.88FerronickelplatinumPt2FeNiTet.
1.89Rhodium(Rh,Pt)Iso.

Other InformationHide

Notes:
Magnetic
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Iron in petrologyHide

References for IronHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Palache, C., Berman, H., and Frondel, C. (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I: 114-116.
Bird, J.M. and Weathers, M.S. (1977) Native iron occurrences of Disko Island, Greenland. The Journal of Geology: 85: 359-371.
Mokhov, A.V., Gornostaeava, T.A., Kartashov, P.M., Asadulin, E.E., Bogatidov, and O.A. (2014) Nanocrystals of native molybdenum, iron, and titanium in the impact glasses of the lunar regolith. New Data on Minerals: 49: 14-22.

Internet Links for IronHide

Localities for IronHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListShow

Mineral and/or Locality  
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