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Approved minerals
4,194 minerals
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Allendeite | Sc₄Zr₃O₁₂ | Trigonal | — | — |
| Allochalcoselite | Cu¹⁺Cu²⁺₅PbO₂(SeO₃)₂Cl₅ | Monoclinic | — | — |
| Alloriite | (Na,K,Ca)₂₄(Na,Ca)₄Ca₄(Si,Al)₄₈O₉₆(SO₄)₄(SO₃,CO₃)₂(OH,Cl)₂(H₂O,OH)₄ | Trigonal | — | — |
| Alluaivite | Na₁₉(Ca,Mn²⁺)₆(Ti,Nb)₃Si₂₆O₇₄Cl·2H₂O | Trigonal | — | — |
| Almagreraite | CuZnMn⁴⁺₃O₈ | Orthorhombic | — | — |
| 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 | — | — |
| Alnaperbøeite-(Ce) | (CaCe₂.₅Na₀.₅)(Al₄)(Si₂O₇)(SiO₄)₃O(OH)₂ | Monoclinic | — | — |
| Alpeite | Ca₄Mn³⁺₂Al₂(Mn³⁺Mg)(SiO₄)₂(Si₃O₁₀)(V₅+O₄)(OH)₆ | Orthorhombic | — | — |
| Alpersite | Mg(SO₄)·7H₂O | Monoclinic | 2.5 | — |
| Alsakharovite-Zn | NaSrKZn(Ti,Nb)₄(Si₄O₁₂)₂(O,OH)₄·7H₂O | Monoclinic | — | — |
| Alterite | Zn₂Fe³⁺₄(SO₄)₄(C₂O₄)₂(OH)₄ * 17H₂O | Monoclinic | — | — |
| Althausite | Mg₄(PO₄)₂(OH,O)(F,☐) | Orthorhombic | — | — |
| Althupite | AlTh(UO₂)₇(PO₄)₄O₂(OH)₅·15H₂O | Triclinic | — | — |
| Altisite | Na₃K₆Ti₂Al₂Si₈O₂₆Cl₃ | Monoclinic | — | — |
| Aluminium (native) | Al | Cubic | — | — |
| Alumino-oxy-rossmanite | — | Trigonal | 7.0 | — |
| Aluminoceladonite | K(Mg,Fe²⁺)Al(Si₄O₁₀)(OH)₂ | Monoclinic | — | — |
| Aluminocerite-(CeCa) | (Ce₆Ca₃)☐Al(SiO₄)₃(SiO₃OH)₄(OH)₃ | Trigonal | — | — |
| Aluminocoquimbite | AlFe(SO₄)₃·9H₂O | Trigonal | — | — |
| Aluminopyracmonite | (NH₄)₃Al(SO₄)₃ | Trigonal | — | — |
| Aluminosugilite | — | Hexagonal | — | — |
| Aluminotaipingite-(CeCa) | (Ce₆Ca₃)◻Al(SiO₄)₃[SiO₃(OH)]₄F₃ | Trigonal | — | — |
| Alumoedtollite | K₂NaCu₅AlO₂(AsO₄)₄ | Triclinic | — | — |
| Alumohydrocalcite | CaAl₂(CO₃)₂(OH)₄·3H₂O | Triclinic | — | — |
| Alumoklyuchevskite | K₃Cu²⁺₃AlO₂(SO₄)₄ | Triclinic | 2.5 | — |
| Alumotantite | AlTaO₄ | Orthorhombic | — | 7.51 g/cm³ |
| Alumovesuvianite | Ca₁₉Al(Al₁₀Mg₂)Si₁₈O₆₉(OH)₉ | Tetragonal | — | — |
| Alumoåkermanite | (Ca,Na)₂(Al,Mg,Fe²⁺)(Si₂O₇) | Tetragonal | — | — |
| Alvanite | ZnAl₄(V(V)O₃)₂(OH)₁₂·2H₂O | Monoclinic | — | 2.49 g/cm³ |
| Alvesite | NaKZrSi₆O₁₅·2H₂O | Orthorhombic | — | — |
| Alwilkinsite-(Y) | Y(UO₂)₃(SO₄)₂O(OH)₃(H₂O)₇·7H₂O | Orthorhombic | — | — |
| Amableite-(Ce) | Na₁₅[(Ce₁.₅Na₁.₅)Mn₃]Mn₂Zr₃◻Si[Si₂₄O₆₉(OH)₃](OH)₂·H₂O | Trigonal | — | — |
| Amakinite | Fe(OH)₂ | Trigonal | — | — |
| Amamoorite | CaMn²⁺₂Mn³⁺(Si₂O₇)O(OH) | — | — | — |
| Amaterasuite | Sr₄Ti₆Si₄O₂₃(OH)Cl | Orthorhombic | — | — |
| Ambrinoite | [K,(NH₄)]₂(As,Sb)₆(Sb,As)₂S₁₃·H₂O | Triclinic | — | — |
| Ameghinite | NaB₃O₃(OH)₄ | Monoclinic | — | 1.99 g/cm³ |
| Amicite | K₂Na₂(Al₄Si₄O₁₆)·5H₂O | Monoclinic | 4.5 | — |
| Ammineite | CuCl₂·2NH₃ | Orthorhombic | — | — |
| Ammonioalunite | (NH)₄Al₃(SO₄)₂(OH)₆ | Trigonal | — | — |
| Ammoniolasalite | [(NH₄)₂Mg₂(H₂O)₂₀] [V₁₀O₂₈] | Monoclinic | — | — |
| Ammonioleucite | (NH₄)AlSi₂O₆ | Tetragonal | — | — |
| Ammoniomagnesiovoltaite | (NH₄)₂Mg₅Fe³⁺₃Al(SO₄)₁₂·18H₂O | Cubic | — | — |
| Ammoniomathesiusite | (NH₄)₅(UO₂)₄(SO₄)₄(VO₅)₄·H₂O | Tetragonal | — | — |
| Ammoniotinsleyite | — | Monoclinic | — | — |
| Ammoniovoltaite | (NH₄)₂Fe²⁺₅Fe³⁺₃Al(SO₄)₁₂(H₂O)₁₈ | Cubic | — | — |
| Ammoniozippeite | (NH₄)₂[(UO₂)₂(SO₄)O₂]*H₂O | Orthorhombic | — | — |
| Amoraite | Ca₁₂Al₆(OH)₃₆(CO₃)₂(SO₃)·15H₂O | Triclinic | — | — |
| Amstallite | CaAl[(Al,Si)₄O₈(OH)₂](OH)₂·(H₂O,Cl) | Monoclinic | 4.0 | — |
| Amurselite | (NH₄)₂(UO₂)₅(SeO₃)₃O₂(OH)₂(H₂O)·8H₂O | Triclinic | — | — |
| Analcime | Na(AlSi₂O₆)·H₂O | Orthorhombic | — | — |
| Anandite | BaFe²⁺₃(Si₃Fe³⁺)O₁₀S(OH) | Monoclinic | — | — |
| Anastasenkoite | — | Triclinic | — | — |
| Anatase | TiO₂ | Tetragonal | — | 3.90 g/cm³ |
| Anatolygurbanovite | SrCa₂Si₃O₉ | Triclinic | — | — |
| Anatolyite | Na₆(Ca,Na)(Mg,Fe³⁺)₃Al(AsO₄)₆ | Trigonal | — | — |
| Ancylite-(La) | LaSr(CO₃)₂(OH)·H₂O | Orthorhombic | — | — |
| Andreadiniite | CuHgAg₇Pb₇Sb₂₄S₄₈ | Monoclinic | — | — |
| Andreybulakhite | Ni(C₂O₄)·2H₂O | Monoclinic | — | — |
| Andreyivanovite | FeCrP | Orthorhombic | — | 6.65 g/cm³ |
| Andrianovite | Na₁₂(K,Sr,Ce)₃Ca₆Mn₃Zr₃Nb(Si₂₅O₇₃)(O,H₂O,OH)₅ | Trigonal | — | — |
| Andrieslombaardite | RhSbS | Cubic | — | 7.62 g/cm³ |
| Anduoite | RuAs₂ | Orthorhombic | — | 8.23 g/cm³ |
| Andychristyite | PbCu²⁺Te₆+O₅(H₂O) | Triclinic | — | — |
| Andymcdonaldite | Fe₂TeO₆ | Tetragonal | — | 6.39 g/cm³ |
| Andyrobertsite | KCdCu₅(AsO₄)₄[As(OH)₂O₂]·2H₂O | Monoclinic | 3.0 | 4.01 g/cm³ |
| Angarfite | NaFe³⁺₅(PO₄)₄(OH)₄·4H₂O | Orthorhombic | — | — |
| Angelellite | Fe³⁺₄(AsO₄)₂O₃ | Triclinic | 5.5 | — |
| Anilite | Cu₇S₄ | Orthorhombic | 3.0 | — |
| Ankinovichite | (Ni,Zn)Al₄(V₅+O₃)₂(OH)₁₂ * 2.₅H₂O | Monoclinic | — | — |
| Anningite-(Ce) | — | Tetragonal | — | — |
| Annite | — | Monoclinic | — | — |
| Annivite-(Zn) | Cu₆(Cu₄Zn₂)Bi₄S₁₂S | Cubic | — | — |
| Anorpiment | As₂S₃ | Triclinic | — | — |
| Anorthominasragrite | (V₄+O)(SO₄) * 5H₂O | Triclinic | — | — |
| Anorthoyttrialite-(Y) | Y₄(SiO₄)(Si₃O₁₀) | Triclinic | — | — |
| Ansermetite | Mn²⁺(V₂O₆) * 4H₂O | Monoclinic | — | — |
| Antarcticite | CaCl₂·6H₂O | Trigonal | — | 1.72 g/cm³ |
| Anthonyite | — | Monoclinic | — | — |