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Approved minerals
4,194 minerals
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Antimonselite | Sb₂Se₃ | Orthorhombic | — | 5.51 g/cm³ |
| Antipinite | KNa₃Cu₂(C₂O₄)₄ | Triclinic | — | — |
| Antipovite | Cu₅O₂(PO₄)₂ | Triclinic | — | — |
| Antlerite | Cu²⁺₃SO₄(OH)₄ | — | — | — |
| Antofagastaite | Na₂Ca(SO₄)₂·1.5H₂O | — | — | — |
| Anyuiite | AuPb₂ | Tetragonal | — | 12.88 g/cm³ |
| Anzaite-(Ce) | Ce₄Fe²⁺Ti₆O₁₈(OH)₂ | Monoclinic | — | — |
| Apachite | Cu₉Si₁₀O₂₉·11H₂O | Monoclinic | — | — |
| Apexite | NaMg(PO₄)·9H₂O | Triclinic | — | — |
| Aplowite | Co(SO₄)·4H₂O | Monoclinic | — | — |
| Apuanite | Fe²⁺Fe³⁺₄Sb³⁺₄O₁₂S | Tetragonal | — | — |
| Aqualite | (H₃O)₈(Na,K,Sr)₅Ca₆Zr₃Si₂₆O₆₆(OH)₉Cl | Trigonal | — | — |
| Arakiite | ZnMn²⁺₁₂Fe³⁺₂(As³⁺O₃)(As⁵⁺O₄)₂(OH)₂₃ | Monoclinic | — | — |
| Arangasite | Al₂(SO₄)(PO₄)F·9H₂O | Monoclinic | — | — |
| Arapovite | — | Tetragonal | — | — |
| Aravaipaite | Pb₃AlF₉·H₂O | Triclinic | — | — |
| Aravaite | Ba₂Ca₁₈(SiO₄)₆(PO₄)₃(CO₃)F₃O | Trigonal | — | — |
| Archerite | H₂KPO₄ | Tetragonal | — | 2.39 g/cm³ |
| Arctite | Na₅Ca₇Ba(PO₄)₆F₃ | Trigonal | 5.0 | — |
| Arcubisite | Ag₆CuBiS₄ | Orthorhombic | — | — |
| Ardaite | Pb₁₇Sb₁₅S₃₅Cl₉ | Monoclinic | — | — |
| Ardennite-(V) | Mn²⁺₄Al₄(AlMg)(VO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆ | Orthorhombic | — | — |
| Argandite | Mn₇(VO₄)₂(OH)₈ | Monoclinic | — | — |
| Argentodufrénoysite | — | Triclinic | — | — |
| Argentoliveingite | AgxPb₄₀-₂xAs₄₈+xS₁₁₂ | Triclinic | — | — |
| Argentopearceite | Ag₁₆As₂S₁₁ | Trigonal | — | — |
| Argentopentlandite | Ag(Fe,Ni)₈S₈ | Cubic | — | — |
| Argentopolybasite | [Ag₉AgS₄][Ag₆Sb₂S₇] | Trigonal | — | — |
| Argentotennantite-(Fe) | Ag₆(Cu₄Fe₂)As₄S₁₂S | Cubic | — | — |
| Argentotetrahedrite-(Hg) | — | Cubic | — | — |
| Argentotetrahedrite-(Zn) | — | Cubic | — | — |
| Argesite | (NH₄)₇Bi₃Cl₁₆ | Trigonal | — | — |
| Ariegilatite | BaCa₁₂(SiO₄)₄(PO₄)₂F₂O | Trigonal | — | — |
| Arisite-(Ce) | NaCe₂(CO₃)₂[F₂ₓ(CO₃)₁₋ₓ]F | Hexagonal | — | — |
| Arisite-(La) | NaLa₂(CO₃)₂[F₂ₓ(CO₃)₁₋ₓ]F | Hexagonal | — | — |
| Aristarainite | Na₂MgB₁₂O₂₀ * 8H₂O | Monoclinic | — | — |
| Armbrusterite | K₅Na₇Mn₁₅[(Si₉O₂₂)₄](OH)₁₀ * 4H₂O | Monoclinic | 3.5 | — |
| Armellinoite-(Ce) | Ca₄Ce₄+(AsO₄)₄·H₂O | Tetragonal | — | — |
| Armstrongite | CaZr(Si₆O₁₅)·2H₂O | Monoclinic | — | — |
| Arrheniusite-(Ce) | — | Trigonal | — | — |
| Arrojadite-(BaNa) | BaNa₃(NaCa)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH) | 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 | — | — |
| Arsenatrotitanite | NaTi(AsO₄)O | Monoclinic | — | 3.72 g/cm³ |
| Arsenbrackebuschite | Pb₂Fe³⁺(AsO₄)₂(OH) | Monoclinic | — | — |
| Arsendescloizite | — | Orthorhombic | 4.0 | — |
| Arseniopleite | (Ca,Na)NaMn²⁺(Mn²⁺,Mg,Fe²⁺)₂(AsO₄)₃ | Monoclinic | — | — |
| Arsenmarcobaldiite | — | Triclinic | — | — |
| Arsenmedaite | Mn²⁺₆ As₅+Si₅O₁₈(OH) | Monoclinic | — | — |
| Arsenobenauite | SrFe³⁺₃(AsO₄)(AsO₃OH)(OH)₆ | Trigonal | — | — |
| Arsenocrandallite | CaAl₃(AsO₄)(AsO₃OH)(OH)₆ | Trigonal | — | — |
| Arsenoflorencite-(Ce) | CeAl₃(AsO₄)₂(OH)₆ | Trigonal | — | — |
| Arsenoflorencite-(La) | LaAl₃(AsO₄)₂(OH)₆ | Trigonal | — | — |
| Arsenogorceixite | BaAl₃(AsO₄)(AsO₃OH)(OH)₆ | Trigonal | — | — |
| Arsenogoyazite | SrAl₃(AsO₄)(AsO₃OH)(OH)₆ | Trigonal | — | — |
| Arsenohauchecornite | Ni₁₈Bi₃AsS₁₆ | Tetragonal | — | — |
| Arsenohopeite | Zn₃(AsO₄)₂·4H₂O | Orthorhombic | 3.0 | 3.42 g/cm³ |
| Arsenopyrite | FeAsS | Monoclinic | — | 6.35 g/cm³ |
| Arsenosabugalite | — | Triclinic | — | — |
| Arsenotučekite | — | Tetragonal | — | — |
| Arsenovanmeersscheite | U(UO₂)₃(AsO₄)₂(OH)₆·4H₂O | Orthorhombic | — | — |
| Arsenowagnerite | Mg₂(AsO₄)F | Monoclinic | — | — |
| Arsenoústalečite | (Cu₄Cu₂)(Cu₄Cu⁺₂)(As₂Te₂)Se₁₂Se | Cubic | — | — |
| Arsenquatrandorite | Ag₁₇.₆Pb₁₂.₈Sb₃₈.₁As₁₁.₅S₉₆ | Monoclinic | — | — |
| Arsenudinaite | NaMg₄(AsO₄)₃ | Tetragonal | — | 3.83 g/cm³ |
| Arsenuranospathite | Al(UO₂)₂(AsO₄)₂F·20H₂O | Orthorhombic | 2.0 | 2.54 g/cm³ |
| Arsiccioite | AgHg₂TlAs₂S₆ | Tetragonal | — | — |
| Arsmirandite | Na₁₈Cu₁₂Fe³⁺O₈(AsO₄)₈Cl₅ | Monoclinic | — | — |
| Arthurite | CuFe³⁺₂(AsO₄)₂(OH)₂ * 4H₂O | Monoclinic | — | — |
| Artroeite | PbAlF₃(OH)₂ | Triclinic | — | 5.24 g/cm³ |
| Artsmithite | (Hg+₂)₂Al(PO₄)₁.₇₄(OH)₁.₇₈ | Monoclinic | — | — |
| Arzamastsevite | K₆Al₅Si₆O₂₀(OH)₄Cl | Tetragonal | — | — |
| Asagiite | NiCu₄(SO₄)(OH)₆·6H₂O | — | — | — |
| Asbecasite | Ca₃(Ti,Sn₄+)Be₂(AsO₃)₆(SiO₄)₂ | Trigonal | — | — |
| Aschamalmite | Pb₆₋₃ₓBi₂₊ₓS₉ | Monoclinic | — | — |
| Ashburtonite | HCu₄Pb₄Si₄O₁₂(HCO₃)₄(OH)₄Cl | Tetragonal | — | — |
| Ashoverite | Zn(OH)₂ | Tetragonal | — | 3.20 g/cm³ |
| Asimowite | Fe₂SiO₄ | Orthorhombic | — | 4.47 g/cm³ |
| Asisite | Pb₇SiO₈Cl₂ | Tetragonal | — | — |