Minerals containing iron
1,244 minerals
Iron — element
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Achalaite | Fe²⁺TiNb₂O₈ | Monoclinic | — | — |
| Achyrophanite | (K,Na)₃(Fe³⁺,Ti,Al,Mg)₅O₂(AsO₄)₅ | Orthorhombic | — | — |
| Achávalite | FeSe | Hexagonal | 2.5 | 4.94 g/cm³ |
| Acmonidesite | (NH₄,K,Pb)₈NaFe²⁺₄(SO₄)₅Cl₈ | Orthorhombic | — | — |
| Actinolite | Ca₂(Mg,Fe)₅[OH|Si₄O₁₁]₂ | Monoclinic | — | — |
| Adachiite | CaFe²⁺₃Al₆(Si₅AlO₁₈)(BO₃)₃(OH)₃(OH) | Trigonal | 7.0 | — |
| Adranosite-(Fe) | (NH₄)₄NaFe₂(SO₄)₄Cl(OH)₂ | Tetragonal | — | — |
| Aegirine | NaFe³⁺Si₂O₆ | Monoclinic | 6.3 | — |
| Aegirine-augite | (Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆ | Monoclinic | — | — |
| Aenigmatite | Na₄[Fe²⁺₁₀Ti₂]O₄[Si₁₂O₃₆] | Triclinic | 5.5 | — |
| Aerinite | (Ca,Na)₆(Fe³⁺,Fe²⁺,Mg,Al)₄(Al,Mg)₆Si₁₂O₃₆(OH)₁₂(CO₃)·12H₂O | — | 3.0 | 2.48 g/cm³ |
| Aheylite | Fe²⁺Al₆(PO₄)₄(OH)₈·4H₂O | Triclinic | — | — |
| Ahrensite | γ-Fe₂(SiO₄) | Cubic | 6.0 | — |
| Akaganeite | (Fe³⁺,Ni²⁺)₈(OH,O)₁₆Cl₁.₂₅·nH₂O | Monoclinic | — | — |
| Albertiniite | Fe²⁺(SO₃)·3H₂O | Monoclinic | — | — |
| Alcaparrosaite | K₃Ti⁴⁺Fe³⁺(SO₄)₄O(H₂O)₂ | Monoclinic | — | — |
| Allabogdanite | (Fe,Ni)₂P | Orthorhombic | — | — |
| Allanite-(Ce) | CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH) | Monoclinic | — | — |
| Allanite-(La) | CaLa(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH) | Monoclinic | — | — |
| Allanite-(Nd) | CaNd(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH) | Monoclinic | — | — |
| Allanite-(Sm) | (CaSm)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH) | Monoclinic | — | — |
| Allanite-(Y) | {CaY}{Al₂Fe²⁺}(Si₂O₇)(SiO₄)O(OH) | Monoclinic | — | — |
| Allanpringite | Fe³⁺₃(PO₄)₂(OH)₃·5H₂O | Monoclinic | 3.0 | — |
| Alluaudite | (Na,Ca)(Mn,Mg,Fe²⁺)(Fe³⁺,Mn²⁺)₂(PO₄)₃ | Monoclinic | — | — |
| Almandine | Fe²⁺₃Al₂(SiO₄)₃ | Cubic | 7.5 | 4.30 g/cm³ |
| Almarudite | K(☐,Na)₂(Mn,Fe,Mg)₂[(Be,Al)₃Si₁₂]O₃₀ | Hexagonal | 6.0 | 2.72 g/cm³ |
| Almeidaite | PbZn₂(Mn,Y)(Ti,Fe³⁺)₁₈O₃₆(OH,O)₂ | Trigonal | — | — |
| Alterite | Zn₂Fe³⁺₄(SO₄)₄(C₂O₄)₂(OH)₄ * 17H₂O | Monoclinic | — | — |
| Aluminoceladonite | K(Mg,Fe²⁺)Al(Si₄O₁₀)(OH)₂ | Monoclinic | — | — |
| Aluminocopiapite | (Al,Mg)Fe³⁺₄(SO₄)₆(OH,O)₂·20H₂O | Triclinic | — | — |
| Aluminocoquimbite | AlFe(SO₄)₃·9H₂O | Trigonal | — | — |
| Alumoåkermanite | (Ca,Na)₂(Al,Mg,Fe²⁺)(Si₂O₇) | Tetragonal | — | — |
| Amakinite | Fe(OH)₂ | Trigonal | — | — |
| Amarantite | Fe³⁺₂O(SO₄)₂·7H₂O | Triclinic | 2.5 | — |
| Amarillite | NaFe³⁺(SO₄)₂·6H₂O | Monoclinic | — | — |
| Ammoniojarosite | (NH)₄Fe³⁺₃(SO₄)₂(OH)₆ | Trigonal | — | — |
| Ammoniomagnesiovoltaite | (NH₄)₂Mg₅Fe³⁺₃Al(SO₄)₁₂·18H₂O | Cubic | — | — |
| Ammoniovoltaite | (NH₄)₂Fe²⁺₅Fe³⁺₃Al(SO₄)₁₂(H₂O)₁₈ | Cubic | — | — |
| Anandite | BaFe²⁺₃(Si₃Fe³⁺)O₁₀S(OH) | Monoclinic | — | — |
| Anapaite | Ca₂Fe²⁺(PO₄)₂·4H₂O | Triclinic | 3.5 | 2.81 g/cm³ |
| Anatolyite | Na₆(Ca,Na)(Mg,Fe³⁺)₃Al(AsO₄)₆ | Trigonal | — | — |
| Andradite | Ca₃Fe³⁺₂(SiO₄)₃ | Cubic | — | — |
| Andreyivanovite | FeCrP | Orthorhombic | — | 6.65 g/cm³ |
| Andrémeyerite | BaFe²⁺₂(Si₂O₇) | Monoclinic | 5.5 | — |
| Andymcdonaldite | Fe₂TeO₆ | Tetragonal | — | 6.39 g/cm³ |
| Angarfite | NaFe³⁺₅(PO₄)₄(OH)₄·4H₂O | Orthorhombic | — | — |
| Angelellite | Fe³⁺₄(AsO₄)₂O₃ | Triclinic | 5.5 | — |
| Ankerite | Ca(Fe²⁺,Mg)(CO₃)₂ | Trigonal | — | 3.00 g/cm³ |
| Anzaite-(Ce) | Ce₄Fe²⁺Ti₆O₁₈(OH)₂ | Monoclinic | — | — |
| Apuanite | Fe²⁺Fe³⁺₄Sb³⁺₄O₁₂S | Tetragonal | — | — |
| Arakiite | ZnMn²⁺₁₂Fe³⁺₂(As³⁺O₃)(As⁵⁺O₄)₂(OH)₂₃ | Monoclinic | — | — |
| Arfvedsonite | NaNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂ | Monoclinic | — | — |
| Argentojarosite | AgFe³⁺₃(SO₄)₂(OH)₆ | Trigonal | — | — |
| Argentopentlandite | Ag(Fe,Ni)₈S₈ | Cubic | — | — |
| Argentopyrite | AgFe₂S₃ | Monoclinic | — | — |
| Argentotennantite-(Fe) | Ag₆(Cu₄Fe₂)As₄S₁₂S | Cubic | — | — |
| Argentotennantite-(Zn) | Ag₆Cu₄(Fe,Zn)₂As₄S₁₃ | Cubic | — | — |
| Argentotetrahedrite-(Fe) | Ag₆Cu₄(Fe,Zn)₂Sb₄S₁₃ | Cubic | — | — |
| Armalcolite | (Mg,Fe²⁺)Ti₂O₅ | Orthorhombic | — | — |
| Arrojadite-(BaNa) | BaNa₃(NaCa)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH) | Monoclinic | — | — |
| Arrojadite-(KFe) | {KNa}{Fe²⁺☐}{Ca}{Na₂☐}{Fe²⁺₁₃}{Al}(PO₄)₁₁(HPO₄)(OH)₂ | Monoclinic | — | — |
| Arrojadite-(KNa) | KNa₃(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂ | Monoclinic | — | — |
| Arrojadite-(PbFe) | PbFe²⁺(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂ | Monoclinic | — | — |
| Arrojadite-(SrFe) | SrFe²⁺(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂ | Monoclinic | — | — |
| Arsenbrackebuschite | Pb₂Fe³⁺(AsO₄)₂(OH) | Monoclinic | — | — |
| Arseniopleite | (Ca,Na)NaMn²⁺(Mn²⁺,Mg,Fe²⁺)₂(AsO₄)₃ | Monoclinic | — | — |
| Arseniosiderite | Ca₂Fe³⁺₃O₂(AsO₄)₃(H₂O)₂·H₂O | Monoclinic | 4.5 | — |
| Arsenobenauite | SrFe³⁺₃(AsO₄)(AsO₃OH)(OH)₆ | Trigonal | — | — |
| Arsenopyrite | FeAsS | Monoclinic | — | 6.35 g/cm³ |
| Arsmirandite | Na₁₈Cu₁₂Fe³⁺O₈(AsO₄)₈Cl₅ | Monoclinic | — | — |
| Arthurite | CuFe³⁺₂(AsO₄)₂(OH)₂ * 4H₂O | Monoclinic | — | — |
| Asimowite | Fe₂SiO₄ | Orthorhombic | — | 4.47 g/cm³ |
| Aspedamite | ☐ ₁₂(Fe²⁺₃Fe²⁺)Nb₄(ThNb₉Fe²⁺₃ Ti₄+O₄₂)(H₂O)₉(OH)₃ | Cubic | — | — |
| Astrophyllite | K₂NaFe²⁺₇Ti₂Si₈O₂₈(OH)₄F | Triclinic | 3.0 | — |
| Atencioite | Ca₂Fe²⁺₃Mg₂Be₄(PO₄)₆(OH)₄ * 6H₂O | Triclinic | — | — |
| Atlasovite | K(BiO)Cu₆Fe³⁺(SO₄)₅O₃Cl | Tetragonal | — | — |
| Attakolite | (Ca,Sr)Mn(Al,Fe)₄(HPO₄,PO₄)₃(SiO₄,PO₄)(OH)₄ | Monoclinic | — | — |
| Augite | (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)₂O | Monoclinic | — | — |
| Auriacusite | Fe³⁺Cu²⁺(AsO₄)O | Orthorhombic | — | — |
| Awaruite | Ni₃Fe | Cubic | — | — |