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Minerals containing arsenic
726 minerals
Arsenic — element
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Mallestigite | Pb₃Sb₅+(SO₄)(AsO₄)(OH)₆ * 3H₂O | Hexagonal | 4.0 | 4.91 g/cm³ |
| Manganarsite | Mn₃(As₂O₄)(OH)₄ | — | — | — |
| Manganberzeliite | (NaCa₂)Mn²⁺₂(AsO₄)₃ | Cubic | — | — |
| Manganlotharmeyerite | CaMn³⁺₂(AsO₄)₂(OH)₂ | — | 3.0 | — |
| Manganobadalovite | NaNaMn(MgFe³⁺)(AsO₄)₃ | Monoclinic | — | — |
| Manganohatertite | NaNaCa(MnFe³⁺)(AsO₄)₃ | Monoclinic | — | — |
| Manganohörnesite | Mn²⁺₃(AsO₄)₂·8H₂O | — | — | — |
| Manganoquadratite | AgMnAsS₃ | Tetragonal | — | — |
| Manganostibite | Mn²⁺₇Sb⁵⁺As⁵⁺O₁₂ | Orthorhombic | — | — |
| Mansfieldite | AlAsO₄·2H₂O | — | — | — |
| Mapimite | Zn₂Fe³⁺₃(AsO₄)₃(OH)₄·10H₂O | Monoclinic | — | — |
| Marcobaldiite | Pb₁₂(Sb₃As₂Bi)∑₆S₂₁ | Triclinic | — | — |
| Marrite | AgPbAsS₃ | Monoclinic | — | 5.49 g/cm³ |
| Marumoite | Pb₃₂As₄₀S₉₂ | — | — | — |
| Maucherite | Ni₁₁As₈ | Tetragonal | 5.0 | — |
| Mauriziodiniite | (NH₄)(As₂O₃)₂I | Hexagonal | 1.0 | — |
| Mawbyite | Pb(Fe₁.₅,Zn₀.₅)(AsO₄)₂(OH)₁.₅(H₂O)₀.₅ | Monoclinic | 4.0 | 5.37 g/cm³ |
| Maxwellite | NaFe³⁺(AsO₄)F | — | — | — |
| Mcgovernite | Mn₁₉Zn₃(AsO₄)₃(AsO₃)(SiO₄)₃(OH)₂₁ | — | — | — |
| Mcnearite | NaCa₅(AsO₄)(HAsO₄)₄ * 4H₂O | Triclinic | — | — |
| Medenbachite | Bi₂Fe³⁺Cu²⁺(AsO₄)₂O(OH)₃ | — | — | — |
| Melanarsite | K₃Cu₇Fe³⁺O₄(AsO₄)₄ | Monoclinic | — | — |
| Menchettiite | Pb₅Mn₃Ag₂Sb₆As₄S₂₄ | Monoclinic | — | — |
| Menshikovite | Pd₃Ni₂As₃ | Hexagonal | 5.0 | — |
| Mertieite | Pd₈Sb₂.₅As₀.₅ | Trigonal | — | — |
| Metaheimite | PbCu₂(AsO₄)(OH)₃ | Monoclinic | — | — |
| Metaheinrichite | Ba(UO₂)₂(AsO₄)₂ * 8H₂O | — | 2.5 | — |
| Metakahlerite | Fe²⁺(UO₂)₂(AsO₄)₂ * 8H₂O | — | — | — |
| Metakirchheimerite | Co(UO₂)₂(AsO₄)₂·8H₂O | — | — | — |
| Metarauchite | Ni(UO₂)₂(AsO₄)₂·8H₂O | Triclinic | 2.0 | — |
| Metauranospinite | Ca(UO₂)₂(AsO₄)₂ * 8H₂O | — | — | — |
| Metazeunerite | Cu(UO₂)₂(AsO₄)₂·8H₂O | Tetragonal | — | — |
| Mgriite | Cu₃AsSe₃ | Cubic | — | — |
| Miguelromeroite | MnMn₂Mn₂(AsO₄)₂(HAsO₄)₂ * 4H₂O | Monoclinic | — | — |
| Mimetite | Pb₅(AsO₄)₃Cl | Hexagonal | — | 6.86 g/cm³ |
| Mixite | BiCu₆(AsO₄)₃(OH)₆ * 3H₂O | Hexagonal | — | — |
| Modderite | (Co,Fe)As | Orthorhombic | 4.0 | — |
| Moiraite | Pb₁₂Sb₈As₈S₃₆ | Triclinic | — | — |
| Molybdofornacite | CuPb₂MoO₄AsO₄(OH) | Monoclinic | — | 6.60 g/cm³ |
| Montpelvouxite | AgPb₁₆Sb₂₇As₁₈S₈₄ | Triclinic | — | — |
| Morelandite | Ca₂Ba₃(AsO₄)₃Cl | Hexagonal | — | — |
| Morleyite | Ag₂CuPb₂₅Sb₂₄As₄S₆₈.₅ | Triclinic | — | — |
| Morrisonite | Ca₁₁(H₂O)₇₈(As³⁺V⁴⁺₂V⁵⁺₁₀As⁵⁺₆O₅₁)₂ | Monoclinic | — | — |
| Mutnovskite | Pb₂AsS₃(I,Cl,Br) | Orthorhombic | 2.0 | — |
| Naalasite | NaAl(AsO₃OH)₂·H₂O | Trigonal | — | — |
| Nabiasite | BaMn²⁺₉(VO₄,AsO₄)₆(OH)₂ | Cubic | — | — |
| Nanlingite | Na(Ca₅Li)Mg₁₂(AsO₃)₂[Fe(AsO₃)₆]F₁₄ | — | — | — |
| Natropharmacoalumite | NaAl₄(AsO₄)₃(OH)₄·4H₂O | Cubic | — | — |
| Natropharmacosiderite | (Na,K)Fe³⁺₄(AsO₄)₃(OH)₄ * 6-₇H₂O | Cubic | — | — |
| Natrouranospinite | (Na₂,Ca)(UO₂)₂(AsO₄)₂ * 5H₂O | — | 2.5 | — |
| Natrowalentaite | [Fe³⁺₀.₅Na₀.₅(H₂O)₆][NaAs³⁺₂(Fe³⁺₂.₃₃W₆+₀.₆₇)(PO₄)₂O₇] | Orthorhombic | — | — |
| Nealite | Pb₄Fe(AsO₃)₂Cl₄·2H₂O | Triclinic | 4.0 | — |
| Nelenite | (Mn,Fe)₁₆(Si₁₂O₃₀)(OH)₁₄[As³⁺₃O₆(OH)₃] | — | — | — |
| Nickelaustinite | CaNi(AsO₄)(OH) | Orthorhombic | — | 4.16 g/cm³ |
| Nickeline | NiAs | Hexagonal | — | — |
| Nickellotharmeyerite | CaNi₂(AsO₄)₂·2H₂O | Monoclinic | — | 4.45 g/cm³ |
| Nickelschneebergite | BiNi₂(AsO₄)₂(OH)·H₂O | — | — | — |
| Nickelskutterudite | (Ni,Co,Fe)As₃ | Cubic | — | — |
| Nickeltalmessite | Ca₂Ni(AsO₄)₂·2H₂O | Triclinic | — | — |
| Nickeltsumcorite | Pb(Ni,Fe³⁺)₂(AsO₄)₂(H₂O,OH)₂ | Monoclinic | 4.0 | 5.02 g/cm³ |
| Nickenichite | (Na,Ca,Cu)₁.₆(Mg,Fe,Al)₃(AsO₄)₃ | — | 3.0 | 4.06 g/cm³ |
| Nielsbohrite | (K,U,☐)(UO₂)₃(AsO₄)(OH)₄·H₂O | Orthorhombic | — | — |
| Nipalarsite | Ni₈Pd₃As₄ | — | — | — |
| Nishanbaevite | KAl₂O(AsO₄)(SO₄) | Orthorhombic | — | — |
| Novákite | (Cu,Ag)₂₁As₁₀ | Monoclinic | — | — |
| Nováčekite | Mg(UO₂)₂(AsO₄)₂·10H₂O | — | 2.5 | — |
| Nowackiite | Cu₆Zn₃As₄S₁₂ | Trigonal | — | — |
| Nyholmite | Cd₃Zn₂(AsO₃OH)₂(AsO₄)₂·4H₂O | Monoclinic | — | — |
| O'danielite | H₂NaZn₃(AsO₄)₃ | Monoclinic | 3.0 | — |
| Obradovicite-KCu | [K₂(H₂O)₁₇Cu(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₄(OH)₃] | Orthorhombic | — | — |
| Obradovicite-NaCu | [Na₂(H₂O)₁₇Cu(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₄(OH)₃] | Orthorhombic | — | — |
| Obradovicite-NaNa | [Na₂(H₂O)₁₆Na(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₃(OH)₄] | Orthorhombic | — | — |
| Oenite | CoSbAs | Orthorhombic | — | — |
| Ogdensburgite | Ca₂Fe³⁺₄(Zn,Mn²⁺)(AsO₄)₄(OH)₆·6H₂O | — | — | — |
| Ojuelaite | ZnFe³⁺₂(AsO₄)₂(OH)₂·4H₂O | Monoclinic | 3.0 | — |
| Okruschite | Ca₂Mn²⁺₅Be₄(AsO₄)₆(OH)₄·6H₂O | Monoclinic | 3.5 | — |
| Olivenite | Cu₂(AsO₄)(OH) | Orthorhombic | 3.0 | — |
| Omeiite | (Os,Ru)As₂ | Orthorhombic | 7.0 | — |
| Ondrušite | CaCu₄(AsO₄)₂(AsO₃OH)₂·10H₂O | Triclinic | — | — |
| Orcelite | Ni₅-xAs₂, x ~ ₀.₂₅ | Hexagonal | — | — |