Minerals containing iron
1,244 minerals
Iron — element
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Kreiterite | CsLi₂Fe³⁺(Si₄O₁₀)F₂ | Monoclinic | — | — |
| Kremersite | (NH₄)₂Fe³⁺Cl₅·H₂O | — | — | — |
| Kryachkoite | (Al,Cu)₆(Fe,Cu) | Orthorhombic | — | — |
| Kryzhanovskite | (Fe³⁺,Mn²⁺)₃(PO₄)₂(OH,H₂O)₃ | — | — | — |
| Kudryavtsevaite | Na₃MgFe³⁺Ti₄O₁₂ | Orthorhombic | — | — |
| Kulanite | Ba(Fe²⁺,Mn²⁺,Mg)₂(Al,Fe³⁺)₂(PO₄)₃(OH)₃ | Monoclinic | — | — |
| Kuliginite | Fe₃Mg(OH)₆Cl₂ | Trigonal | — | — |
| Kummerite | Mn²⁺Fe³⁺Al(PO₄)₂(OH)₂·8H₂O | Triclinic | — | — |
| Kunatite | CuFe³⁺₂(PO₄)₂(OH)₂·4H₂O | Monoclinic | — | — |
| Kupletskite | (K,Na)₃(Mn,Fe)₇Ti₂Si₈O₂₆(OH)₄F | — | — | — |
| Kupčíkite | Cu₃.₄Fe₀.₆Bi₅S₁₀ | Monoclinic | — | — |
| Kuratite | Ca₂(Fe²⁺₅Ti)O₂[Si₄Al₂O₁₈] | Triclinic | — | — |
| Laachite | (Ca,Mn)₂Zr₂Nb₂TiFeO₁₄ | Monoclinic | — | — |
| Labuntsovite-Fe | Na₄K₄Fe²⁺₂Ti₈O₄(Si₄O₁₂)₄(OH)₄·10-12H₂O | — | — | — |
| Labyrinthite | (Na,K,Sr)₃₅Ca₁₂Fe₃Zr₆TiSi₅₁O₁₄₄(O,OH,H₂O)₉Cl₃ | Trigonal | — | — |
| Laihunite | Fe²⁺Fe³⁺₂(SiO₄)₂ | Monoclinic | 6.0 | — |
| Lakebogaite | NaCaFe₂H(UO₂)₂(PO₄)₄(OH)₂·8H₂O | — | — | — |
| Landauite | NaMnZn₂(Ti,Fe)₆Ti₁₂O₃₈ | — | — | — |
| Landesite | Mn²⁺₃-xFe³⁺x(PO₄)₂(OH)x * (₃-x)H₂O | — | — | — |
| Laptevite-(Ce) | NaFe²⁺(REE₇Ca₅Y₃)(SiO₄)₄(Si₃B₂PO₁₈)(BO₃)F₁₁ | Trigonal | — | — |
| Lasnierite | (Ca,Sr)(Mg,Fe²⁺)₂Al(P[O,F]₄)₃ | Orthorhombic | — | — |
| Latrappite | Ca₂NbFe³⁺O₆ | — | — | — |
| Laueite | Mn²⁺Fe³⁺₂(PO₄)₂(OH)₂ * 8H₂O | Triclinic | 3.0 | — |
| Lausenite | Fe₂(SO₄)₃*₅H₂O | Monoclinic | — | — |
| Lawrencite | FeCl₂ | Trigonal | — | 3.17 g/cm³ |
| Lazarenkoite | (Ca,Fe²⁺)Fe³⁺As³⁺₃O₇ * 3H₂O | Orthorhombic | — | — |
| Lefontite | Fe₂Al₂Be(PO₄)₂(OH)₆ | Orthorhombic | — | — |
| Lenaite | AgFeS₂ | Tetragonal | — | — |
| Lennilenapeite | K₆-₇(Mg,Mn,Fe,Zn)₄₈(Si,Al)₇₂(O,OH)₂₁₆ * 16H₂O | — | — | — |
| Lepageite | Mn²⁺₃(Fe³⁺₇Fe²⁺₄)O₃[Sb³⁺₅As³⁺₈O₃₄] | Triclinic | — | — |
| Lepidocrocite | Fe³⁺O(OH) | Orthorhombic | 5.0 | — |
| Leucophosphite | KFe³⁺₂(PO₄)₂(OH)(H₂O)₂ | — | 3.5 | — |
| Leybovite-K | KCuNa(MgFe³⁺)(AsO₄)₃ | Monoclinic | — | — |
| Leydetite | Fe(UO₂)(SO₄)₂·11H₂O | Monoclinic | — | — |
| Lileyite | Ba₂Ti₂Na₂Fe²⁺Mg(Si₂O₇)₂O₂F₂ | Monoclinic | — | — |
| Linzhiite | FeSi₂ | Tetragonal | — | 5.08 g/cm³ |
| Lipscombite | Fe²⁺Fe³⁺₂(PO₄)₂(OH)₂ | — | — | — |
| Lishizhenite | ZnFe₂(SO₄)₄ * 14H₂O | Triclinic | — | — |
| Liskeardite | [(Al,Fe)₃₂(AsO₄)₁₈(OH)₄₂(H₂O)₂₂] * 5₂H₂O | Monoclinic | — | — |
| Liuite | FeTiO₃ | Orthorhombic | — | — |
| Lobanovite | K₂Na(Fe²⁺₄Mg₂Na)Ti₂(Si₄O₁₂)₂O₂(OH)₄ | — | — | — |
| Lourenswalsite | (K,Ba)₂(Ti,Mg,Ca,Fe)₄(Si,Al,Fe)₆O₁₄(OH)₁₂ | Hexagonal | — | — |
| Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)₂(Ti,Fe,Cr,Al)₁₈O₃₈ | Hexagonal | 5.0 | 4.42 g/cm³ |
| Lucchesiite | CaFe²⁺₃ Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O | Trigonal | 7.0 | — |
| Ludlamite | Fe²⁺₃(PO₄)₂·4H₂O | Monoclinic | — | — |
| Ludlockite | PbFe³⁺₄As³⁺₁₀O₂₂ | Triclinic | — | — |
| Ludwigite | Mg₂Fe³⁺O₂(BO₃) | Orthorhombic | 5.5 | — |
| Luinaite-(OH) | (Na,☐)(Fe²⁺,Mg)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄ | Monoclinic | — | — |
| Lukrahnite | Ca(Cu,Zn)(Fe³⁺,Zn)(AsO₄)₂ * 2(H₂O,OH) | — | 5.0 | 4.18 g/cm³ |
| Lulzacite | Sr₂Fe²⁺(Fe²⁺,Mg)₂Al₄(PO₄)₄(OH)₁₀ | Triclinic | — | — |
| Luobusaite | Fe₀.₈₄Si₂ | Orthorhombic | — | — |
| Löllingite | FeAs₂ | Orthorhombic | — | 7.60 g/cm³ |
| Macaulayite | (Fe,Al)₂₄Si₄O₄₃(OH)₂ | — | — | — |
| Mackayite | Fe³⁺Te⁴⁺₂O₅(OH) | — | — | — |
| Mackinawite | (Fe,Ni)₉S₈ | Tetragonal | 2.5 | 4.30 g/cm³ |
| Macraeite | [K(H₂O)]Mn₂(Fe₂Ti)(PO₄)₄[O(OH)](H₂O)₁₀·4H₂O | Monoclinic | — | — |
| Magbasite | KBaFe³⁺Mg₇Si₈O₂₂(OH)₂F₆ | Orthorhombic | — | — |
| Magganasite | CuFe³⁺₃O(AsO₄)₃ | Triclinic | — | — |
| Maghagendorfite | (Na,☐)MgMn(Fe,Fe)₂(PO₄)₃ | — | — | — |
| Maghemite | (Fe³⁺₀.₆₇☐₀.₃₃)Fe³⁺₂O₄ | Cubic | 6.0 | — |
| Magnesio-arfvedsonite | NaNa₂(Mg₄Fe³⁺)Si₈O₂₂(OH)₂ | Monoclinic | — | — |
| Magnesio-ferri-fluoro-hornblende | ☐Ca₂(Mg₄Fe³⁺)(Si₇Al)O₂₂F₂ | Monoclinic | — | — |
| Magnesio-ferri-hornblende | ☐Ca₂(Mg₄Fe³⁺)[(Si₇Al)O₂₂](OH)₂ | Monoclinic | — | — |
| Magnesio-fluoro-arfvedsonite | NaNa₂(Mg₄Fe³⁺)Si₈O₂₂F₂ | Monoclinic | 5.5 | — |
| Magnesio-fluoro-hastingsite | NaCa₂(Mg₄Fe³⁺)(Si₆Al₂)O₂₂F₂ | Monoclinic | — | — |
| Magnesio-fluoro-riebeckite | ◻Na₂(Mg₃Fe³⁺₂)(Si₈O₂₂)F₂ | Monoclinic | — | — |
| Magnesio-hastingsite | NaCa₂(Mg₄Fe³⁺)(Si₆Al₂)O₂₂(OH)₂ | Monoclinic | — | — |
| Magnesio-riebeckite | ☐Na₂(Mg₃Fe³⁺₂)Si₈O₂₂(OH)₂ | Monoclinic | 6.0 | — |
| Magnesioalterite | Mg₂Fe³⁺₄(SO₄)₄(C₂O₄)₂(OH)₄·17H₂O | Monoclinic | — | — |
| Magnesiobeltrandoite-2N3S | (Mg₆Al₂)(Al₁₈(Fe³⁺)₂)O₃₈(OH)₂ | Trigonal | — | — |
| Magnesiocarpholite | (Mg,Fe²⁺)Al₂(Si₂O₆)(OH)₄ | — | — | — |
| Magnesiocopiapite | MgFe³⁺₄(SO₄)₆(OH)₂ * 20H₂O | — | — | — |
| Magnesioferrite | MgFe³⁺₂O₄ | Cubic | — | — |
| Magnesiohatertite | (Na,Ca)₂Ca(Mg,Fe³⁺)₂(AsO₄)₃ | Monoclinic | — | — |
| Magnesiohongruiite-(Fe³⁺) | (Mg₂Fe³⁺)Fe³⁺NbO₇(OH) | Hexagonal | — | — |
| Magnesiohulsite | Mg₂Fe³⁺O₂(BO₃) | Monoclinic | — | — |
| Magnesiohögbomite-2N3S | [(Mg,Fe²⁺,Zn)₄(Al,Ti,Fe³⁺)₁₀O₁₉(OH)]₂ | Trigonal | — | — |
| Magnesiohögbomite-2N4S | [(Mg₈.₄₃Fe²⁺₁.₅₇)Σ=₁₀Al₂₂Ti⁴⁺₂O₄₆(OH)₂] | Hexagonal | — | — |
| Magnesiohögbomite-6N6S | [(Mg,Fe²⁺)₃(Al,Ti,Fe³⁺)₈O₁₅(OH)]₆ | Trigonal | — | — |
| Magnesioneptunite | KNa₂Li(Mg,Fe)₂Ti₂Si₈O₂₄ | Monoclinic | — | — |