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Iron

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Formula:
Fe
System:
Isometric
Colour:
Iron-black
Hardness:
Member of:
Name:
Old english word for the metal.
Rare in igneous rocks. Forms the majority of the earth's core.

Visit gemdat.org for gemological information about Iron.

Classification of Iron

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
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)
mindat.org URL:
http://www.mindat.org/min-2047.html
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First Recorded Occurrence of Iron

Physical Properties of Iron

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Iron-black
Streak:
Grey
Hardness (Mohs):
Hardness (Vickers):
VHN100=160 kg/mm2
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)

Crystallography of Iron

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

Optical Data of Iron

Type:
Isotropic
Colour in reflected light:
White

Chemical Properties of Iron

Formula:
Fe
Essential elements:
All elements listed in formula:
Common Impurities:
Ni,C,Co,P,Cu,S

Relationship of Iron to other Species

Member of:
Other Members of Group:
1.AE.05MolybdenumMo
1.AE.05ChromiumCr
1.AE.05Kamacite(Fe,Ni)
1.AE.05TungstenW
1.AE.05UM2001-06-E:CrFeNiFe7Cr2Ni
1.AE.10Taenite(Fe,Ni)
1.AE.10TetrataeniteFeNi
1.AE.10AntitaeniteFe3Ni
1.AE.15ChromferideFe3Cr1-x (x=0.6)
1.AE.15FerchromideCr3Fe1-x
1.AE.15WairauiteCoFe
1.AE.20AwaruiteNi3Fe
1.AE.25JedwabiteFe7(Ta,Nb)3
1.AE.30ManganeseMn
1.1CopperCu
1.2SilverAg
1.5GoldAu
1.6AuricuprideCu3Au
1.7Tetra-auricuprideAuCu
1.8ZincZn
1.9CadmiumCd
1.10DanbaiteCuZn2
1.11ZhanghengiteCuZn
1.12MercuryHg
1.13KolymiteCu7Hg6
1.14MoschellandsbergiteAg2Hg3
1.15EugeniteAg11Hg2
1.16SchachneriteAg1.1Hg0.9
1.17ParaschachneriteAg3Hg2
1.18LuanheiteAg3Hg
1.19Weishanite(Au,Ag)3Hg2
1.20IndiumIn
1.21AluminiumAl
1.22Khatyrkite(Cu,Zn)Al2
1.23Cupalite(Cu,Zn)Al
1.24DiamondC
1.25GraphiteC
1.26ChaoiteC
1.27LonsdaleiteC
1.28SiliconSi
1.29TinSn
1.30LeadPb
1.31AnyuiiteAu(Pb,Sb)2
1.31NovodnepriteAuPb3
1.32LeadamalgamPb0.7Hg0.3
1.33ArsenicAs
1.34ArsenolampriteAs
1.35PaxiteCuAs2
1.36KoutekiteCu5As2
1.37DomeykiteCu3As
1.38Algodonite(Cu1-xAsx)
1.39NovákiteCu20AgAs10
1.40KutinaiteAg6Cu14As7
1.41AntimonySb
1.42StibarsenAsSb
1.43ParadocrasiteSb3As
1.44HorsforditeCu, Sb
1.45CuprostibiteCu2(Sb,Tl)
1.46Allargentum(Ag1-xSbx)
1.47AurostibiteAuSb2
1.48DyscrasiteAg3Sb
1.49BismuthBi
1.50MaldoniteAu2Bi
1.51SulphurS8
1.52RosickýiteS
1.53SeleniumSe
1.54TelluriumTe
1.55ChromiumCr
1.56RheniumRe
1.58ChromferideFe3Cr1-x (x=0.6)
1.59FerchromideCr3Fe1-x
1.60WairauiteCoFe
1.61NickelNi
1.62Kamacite(Fe,Ni)
1.63Taenite(Fe,Ni)
1.64TetrataeniteFeNi
1.65AwaruiteNi3Fe
1.66Palladium(Pd,Pt)
1.67PotaritePdHg
1.68PaolovitePd2Sn
1.69Stannopalladinite(Pd,Cu)3Sn2
1.70CabriitePd2CuSn
1.71Taimyrite-I(Pd,Cu,Pt)3Sn
1.72Atokite(Pd,Pt)3Sn
1.73Rustenburgite(Pt,Pd)3Sn
1.74Zvyagintsevite(Pd,Pt,Au)3(Pb,Sn)
1.75PlumbopalladinitePd3Pb2
1.76Osmium(Os,Ir,Ru)
1.77Iridium(Ir,Os,Ru)
1.82PlatinumPt
1.83HongshiitePtCu
1.84NiggliitePtSn
1.85IsoferroplatinumPt3Fe
1.86TetraferroplatinumPtFe
1.87TulameenitePt2CuFe
1.88FerronickelplatinumPt2FeNi
1.89Rhodium(Rh,Pt)
1.1.17.2NickelNi
1.1.17.3Kamacite(Fe,Ni)
1.1.17.4Taenite(Fe,Ni)
1.1.17.5TetrataeniteFeNi
1.1.17.6AwaruiteNi3Fe
1.1.17.6Hexaferrum(Fe,Os,Ru,Ir)

Other Names for Iron

Name in Other Languages:
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

Other Information

Other Information:
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.

References for Iron

Reference List:
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I: 114-116.

Internet Links for Iron

Localities for Iron

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.
Mineral and/or Locality  
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