Minerals containing iron
1,244 minerals
Iron — element
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Isoferroplatinum | Pt₃Fe | Cubic | — | 18.07 g/cm³ |
| Isovite | (Cr,Fe)₂₃C₆ | Cubic | — | — |
| Izoklakeite | Pb₂₆.₄(Cu,Fe)₂(Sb,Bi)₁₉.₆S₅₇ | — | — | — |
| Jacobsite | Mn²⁺Fe³⁺₂O₄ | Cubic | — | — |
| Jagoite | Pb₁₈Fe³⁺₄[Si₄(Si,Fe³⁺)₆][Pb₄Si₁₆(Si,Fe)₄]O₈₂Cl₆ | Hexagonal | — | — |
| Jahnsite-(CaFeMg) | CaFe²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O | Monoclinic | — | — |
| Jahnsite-(CaMnFe) | CaMn²⁺Fe²⁺₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(CaMnMg) | CaMn²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(CaMnMn) | CaMn²⁺Mn²⁺₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(MnMnFe) | Mn²⁺Mn²⁺Fe²⁺₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O | Monoclinic | — | — |
| Jahnsite-(MnMnMg) | Mn²⁺Mn²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(MnMnMn) | {Mn²⁺}{Mn²⁺}{Mn²⁺₂}{Fe³⁺₂}(PO₄)₄(OH)₂·8H₂O | Monoclinic | — | — |
| Jahnsite-(MnMnZn) | Mn²⁺Mn²⁺Zn₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(NaFeMg) | NaFe³⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O | Monoclinic | — | — |
| Jahnsite-(NaMnMg) | {(Na,Ca)}{(Mn²⁺,Fe³⁺)}{(Mg,Fe³⁺)₂}{Fe³⁺₂}(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jamesite | Pb₂Zn(Fe²⁺,Zn)₂Fe³⁺₄(AsO₄)₄(OH)₁₀ | Triclinic | 3.0 | 5.08 g/cm³ |
| Jamesonite | Pb₄FeSb₆S₁₄ | Monoclinic | 2.5 | — |
| Janggunite | (Mn⁴⁺,Mn²⁺,Fe³⁺)₆O₈(OH)₆ | Orthorhombic | — | — |
| Janhaugite | (Na,Ca)₃(Mn²⁺,Fe²⁺)₃(Ti,Zr,Nb)₂(Si₂O₇)₂O₂(OH,F)₂ | Monoclinic | — | — |
| Jarosite | KFe³⁺₃(SO₄)₂(OH)₆ | Hexagonal | — | — |
| Javorieite | KFeCl₃ | Orthorhombic | — | — |
| Jeanbandyite | Fe³⁺xFe²⁺₁-xSn(OH)₆-xOx | Tetragonal | — | — |
| Jedwabite | Fe₇Ta₃ | Hexagonal | 6.5 | — |
| Jinshajiangite | BaNa(Fe²⁺)₄Ti₂(Si₂O₇)₂O₂(OH)₂F | Monoclinic | — | — |
| Joaquinite-(Ce) | NaBa₂Ce₂FeTi₂[Si₄O₁₂]₂O₂(OH,F)·H₂O | Monoclinic | — | — |
| Joesmithite | PbCa₂(Mg₃Fe³⁺₂)(Be₂Si₆)O₂₂(OH)₂ | Monoclinic | 5.5 | — |
| Johnsomervilleite | Na₁₀Ca₆Mg₁₈Fe²⁺₂₅(PO₄)₃₆ | Trigonal | — | — |
| Julgoldite-(Fe2+) | Ca₂Fe²⁺Fe³⁺₂(Si₂O₇)(SiO₄)(OH)₂·H₂O | Monoclinic | — | — |
| Julgoldite-(Mg) | Ca₂MgFe³⁺₂(Si₂O₇)(SiO₄)(OH)₂·H₂O | Monoclinic | — | — |
| Jungite | Ca₂Zn₄Fe³⁺₈(PO₄)₉(OH)₉·16H₂O | Orthorhombic | 1.0 | — |
| Juxingite | Bi₆Cu₁₄₀Fe₃₀S₁₂₅ | Cubic | — | — |
| Kaatialaite | Fe(H₂AsO₄)₃ * 5H₂O | Monoclinic | — | — |
| Kahlerite | Fe(UO₂)₂(AsO₄)₂ * 12H₂O | — | — | — |
| Kainotropite | Cu₄Fe³⁺O₂(V₂O₇)(VO₄) | Orthorhombic | — | — |
| Kalifersite | (K,Na)₅Fe³⁺₇Si₂₀O₅₀(OH)₆ * 12H₂O | — | — | — |
| Kamarizaite | Fe³⁺₃(AsO₄)₂(OH)₃·3H₂O | Triclinic | — | — |
| Kamiokite | Fe₂Mo₃O₈ | Hexagonal | — | — |
| Kapundaite | CaNaFe³⁺₄(PO₄)₄(OH)₃·5H₂O | Triclinic | — | — |
| Karenwebberite | NaFe²⁺(PO₄) | Orthorhombic | — | — |
| Karibibite | Fe³⁺₃(As³⁺O₂)₄(As³⁺₂O₅)(OH) | Orthorhombic | — | — |
| Karnasurtite-(Ce) | (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si₂O₇)(OH)₄ * 3H₂O | Amorphous | — | — |
| Karwowskiite | Ca₉Mg(Fe²⁺₀,₅◻₀,₅)(PO₄)₇ | Trigonal | — | 3.08 g/cm³ |
| Kastningite | (Mn²⁺,Fe²⁺,Mg)Al₂(PO₄)₂(OH)₂·8H₂O | — | — | — |
| Katanite | Ba₃NbFe₃Si₂O₁₄ | Trigonal | — | — |
| Katoptrite | (Mn²⁺,Mg)₁₃(Al,Fe³⁺)₄Sb₅+₂(SiO₄)₂O₂₀ | — | — | — |
| Kazakhstanite | Fe³⁺₅V₄+₃V₅+₁₂O₃₉(OH)₉ * 9H₂O | — | — | — |
| Keckite | CaMn(Fe³⁺,Mn)₂Fe³⁺₂(PO₄)₄(OH)₃(H₂O)₇ | Monoclinic | — | — |
| Keilite | FeS | Cubic | 4.0 | 4.29 g/cm³ |
| Kenngottite | Mn²⁺₃Fe³⁺₄(PO₄)₄(OH)₆(H₂O)₂ | Monoclinic | — | — |
| Kenoargentotetrahedrite-(Fe) | Ag₆(Cu₄Fe₂)Sb₄S₁₂☐ | — | — | — |
| Kentbrooksite | (Na,REE)₁₅(Ca,REE)₆(Mn²⁺,Fe²⁺)₃Zr₃Nb[Si₂₅O₇₄]F₂ * 2H₂O | Trigonal | — | — |
| Kerimasite | Ca₃Zr₂(SiFe³⁺₂)O₁₂ | Cubic | 7.0 | — |
| Keystoneite | Mg₀.₅NiFe³⁺(Te⁴⁺O₃)₃·4.5H₂O | — | — | — |
| Kharaelakhite | (Cu,Pt,Pb,Fe,Ni)₉S₈ | Orthorhombic | — | — |
| Khesinite | Ca₄(Mg₃Fe³⁺₉)O₄(Fe³⁺₉Si₃)O₃₆ | Triclinic | — | — |
| Khmaralite | (Mg,Al,Fe)₁₆[(Al,Si,Be)₁₂O₃₆]O₄ | — | — | — |
| Khomyakovite | Na₁₂Sr₃Ca₆Fe₃Zr₃W[Si₂₅O₇₃](O,OH,H₂O)₃(OH,Cl)₂ | Trigonal | — | — |
| Khrenovite | Na₃Fe³⁺₂(AsO₄)₃ | Monoclinic | — | — |
| Kidodite | BaMg₂Fe₁₆O₂₇ | Hexagonal | — | — |
| Kidwellite | NaFe³⁺₉₊ₓ(PO₄)₆(OH)₁₁·3H₂O (x ≈ 0.33) | Monoclinic | 3.0 | 3.34 g/cm³ |
| Kimzeyite | Ca₃(Zr,Ti)₂((Si,Al,Fe³⁺)O₄)₃ | Cubic | 7.0 | — |
| Kingsmountite | Ca₄(Fe²⁺,Mn²⁺)Al₄(PO₄)₆(OH)₄ * 12H₂O | Triclinic | — | — |
| Kinichilite | Mg₀.₅Mn²⁺Fe³⁺(Te⁴⁺O₃)₃·4.5H₂O | — | — | — |
| Kintoreite | PbFe₃(PO₄)(PO₃OH)(OH)₆ | Trigonal | — | — |
| Kirschsteinite | CaFe²⁺SiO₄ | Orthorhombic | — | — |
| Kleberite | FeTi₈O₁₁(OH)₅ | Monoclinic | — | — |
| Klyuchevskite | K₃Cu₃(Fe³⁺,Al)(SO₄)₄O₂ | Monoclinic | — | — |
| Klöchite | (Fe²⁺Fe³⁺)☐₂KZn₃(Si₁₂O₃₀) | Hexagonal | — | — |
| Koashvite | Na₆(Ca,Mn)(Ti,Fe)Si₆O₁₈ * H₂O | Orthorhombic | — | — |
| Kobeite-(Y) | (REE,Fe,U)₃ Zr(Ti,Nb)₃ O₁₂ | — | — | — |
| Kobellite | Pb₁₁(Cu,Fe)₂(Bi,Sb)₁₅S₃₅ | Orthorhombic | — | — |
| Koksharovite | CaMg₂Fe³⁺₄(VO₄)₆ | Triclinic | 4.5 | — |
| Kolfanite | Ca₂Fe³⁺₃O₂(AsO₄)₃·2H₂O | Monoclinic | — | — |
| Kolitschite | Pb[Zn₀.₅,☐₀.₅]Fe₃(AsO₄)₂(OH)₆ | Monoclinic | — | — |
| Kollerite | (NH₄)₂Fe³⁺(SO₃)₂(OH)*H₂O | Orthorhombic | — | — |
| Koninckite | Fe³⁺PO₄ * 3H₂O | Tetragonal | — | — |
| Koragoite | (Mn²⁺,Fe³⁺)₃(Nb,Ta,Ti)₂(Nb,Mn)₂(W,Ta)₂O₂₀ | Monoclinic | — | — |
| Kornelite | Fe₂(SO₄)₃ * 7H₂O | Monoclinic | — | — |
| Kraisslite | Zn₃(Mn,Mg)₂₅(Fe³⁺,Al)(As³⁺O₃)₂[(Si,As₅+)O₄]₁₀(OH)₁₆ | — | — | — |
| Krausite | KFe(SO₄)₂ * H₂O | Monoclinic | — | — |