| Mineral | Formula | Crystal System | Mindat |
|---|
| McGuinnessite | (Mg,Cu)2(CO3)(OH)2 | Monoclinic | Mindat.org |
| Mercury | Hg | Trigonal | Mindat.org |
| Mesolite | Na2Ca2[Al2Si3O10]3 · 8(H2O) | Orthorhombic | Mindat.org |
| Metaheinrichite | Ba(UO2)2(AsO4)2 · 8H2O | Monoclinic | Mindat.org |
| Metarossite | Ca(V5+2O6) · 2H2O | Triclinic | Mindat.org |
| Metatorbernite | Cu(UO2)2(PO4)2 · 8(H2O) | Tetragonal | Mindat.org |
| Metavariscite | AlPO4 · 2(H2O) | Monoclinic | Mindat.org |
| Metavauxite | Fe2+Al2(PO4)2(OH)2 · 8(H2O) | Monoclinic | Mindat.org |
| Metazeunerite | Cu(UO2)2(AsO4)2 · 8H2O | Tetragonal | Mindat.org |
| Microcline | KAlSi3O8 | Triclinic | Mindat.org |
| Mimetite | Pb5(AsO4)3Cl | Hexagonal | Mindat.org |
| Mixite | BiCu6(AsO4)3(OH)6 · 3H2O | Hexagonal | Mindat.org |
| Mojaveite | Cu6[Te6+O4(OH)2](OH)7Cl | Trigonal | Mindat.org |
| Molybdenite | MoS2 | Hexagonal | Mindat.org |
| Molybdofornacite | Pb2Cu(MoO4,CrO4)(AsO4,PO4)(OH) | Monoclinic | Mindat.org |
| Mordenite | (Ca,Na2,K2)Al2Si10O24 · 7(H2O) | Orthorhombic | Mindat.org |
| Morinite | Na2Ca4Al4(PO4)4(F,OH)10 · 3(H2O) | Monoclinic | Mindat.org |
| Mottramite | Pb(Cu,Zn)[OH|VO4] | Orthorhombic | Mindat.org |
| Muscovite | KAl2(Si3Al)O10(OH,F)2 | Monoclinic | Mindat.org |
| Nakauriite | Cu8(SO4)4(CO3)(OH)6 · 48H2O | Orthorhombic | Mindat.org |
| Namibite | Cu(BiO)2(VO4)(OH) | Triclinic | Mindat.org |
| Natrolite | Na2Al2Si3O10 · 2(H2O) | Orthorhombic | Mindat.org |
| Natrozippeite | Na5(UO2)8(SO4)4O5(OH)3 · 12H2O | Monoclinic | Mindat.org |
| Nepheline | (Na,K)AlSiO4 | Trigonal | Mindat.org |
| Neptunite | KNa2Li(Fe2+,Mn)2Ti2Si8O24 | Monoclinic | Mindat.org |
| Nikischerite | NaFe2+6Al3(SO4)2(OH)18 · 12(H2O) | Trigonal | Mindat.org |
| Nissonite | Cu2Mg2(PO4)2(OH)2 · 5H2O | Monoclinic | Mindat.org |
| Nontronite | Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O | Monoclinic | Mindat.org |
| Norbergite | Mg3(SiO4)(F,OH)2 | Orthorhombic | Mindat.org |
| Nosean | Na8(Al6Si6O24)(SO4) | Isometric | Mindat.org |
| Obsidian | | Amorphous | Mindat.org |
| Okanoganite-(Y) | (Na,Ca)3(Y,Ce)12Si6B2O27F14 | Trigonal | Mindat.org |
| Okenite | Ca3[Si6O15] · 6(H2O) | Triclinic | Mindat.org |
| Olivenite | Cu2(AsO4)(OH) | Monoclinic | Mindat.org |
| Olshanskyite | Ca2[B3O3(OH)6](OH) · 3H2O | Triclinic | Mindat.org |
| Opal | SiO2 · n(H2O) | Amorphous | Mindat.org |
| Opal-AN | SiO2 · n(H2O) | Amorphous | Mindat.org |
| Orpiment | As2S3 | Monoclinic | Mindat.org |
| Orthoclase | KAlSi3O8 | Monoclinic | Mindat.org |
| Orthoserpierite | Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O | Orthorhombic | Mindat.org |
| Osarizawaite | Pb(Al2Cu2+)(SO4)2(OH)6 | Trigonal | Mindat.org |
| Ottoite | Pb2TeO5 | Monoclinic | Mindat.org |
| Papagoite | CaCuAlSi2O6(OH)3 | Monoclinic | Mindat.org |
| Paratacamite | (Cu,Zn)2(OH)3Cl | Trigonal | Mindat.org |
| Paravauxite | Fe2+Al2(PO4)2(OH)2 · 8(H2O) | Triclinic | Mindat.org |
| Parvowinchite | Mn2+2Mg5(Si8O22)(OH)2 | Monoclinic | Mindat.org |
| Pascoite | Ca3(V10O28) · 17H2O | Monoclinic | Mindat.org |
| Pauladamsite | Cu4(SeO3)(SO4)(OH)4·2H2O | Triclinic | Mindat.org |
| Paulingite-Ca | (Ca,K2,Na2,Ba)5[Al10Si35O90] · 45(H2O) | Isometric | Mindat.org |
| Pentagonite | Ca(VO)Si4O10 · 4(H2O) | Orthorhombic | Mindat.org |
Records 301 to 350 of 505
