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Approved minerals
4,194 minerals
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Isocubanite | CuFe₂S₃ | Cubic | 3.5 | — |
| Isoferroplatinum | Pt₃Fe | Cubic | — | 18.07 g/cm³ |
| Isolueshite | NaNbO₃ | Cubic | 5.5 | 4.47 g/cm³ |
| Isomertieite | Pd₁₁Sb₂As₂ | Cubic | — | — |
| Isovite | (Cr,Fe)₂₃C₆ | Cubic | — | — |
| Isselite | Cu₆(SO₄)(OH)₁₀(H₂O)₄·H₂O | Orthorhombic | — | — |
| Itelmenite | Na₄Mg₃Cu₃(SO₄)₈ | Orthorhombic | — | — |
| Itoigawaite | SrAl₂Si₂O₇(OH)₂·H₂O | Orthorhombic | — | — |
| Itoite | Pb₃Ge₄+(SO₄)₂O₂(OH)₂ | Orthorhombic | — | 6.67 g/cm³ |
| Itsiite | Ba₂Ca(BSi₂O₇)₂ | Tetragonal | — | 3.51 g/cm³ |
| Ivanyukite-Cu | Cu[Ti₄O₂(OH)₂(SiO₄)₃]·7H₂O | Cubic | — | — |
| Ivanyukite-K | K₂[Ti₄O₂(OH)₂(SiO₄)₃]·9H₂O | Cubic | — | — |
| Ivanyukite-Na | Na₂[Ti₄O₂(OH)₂(SiO₄)₃]·6H₂O | Cubic | — | — |
| Ivsite | Na₃H(SO₄)₂ | Monoclinic | — | 2.47 g/cm³ |
| Iwashiroite-(Y) | Y(Ta,Nb)O₄ | Monoclinic | — | — |
| Iwateite | Na₂BaMn(PO₄)₂ | Trigonal | — | — |
| Ixiolite-(Sc) | (Ta₀.₅Sc₀.₅)O₂ | Orthorhombic | — | — |
| Iyoite | MnCuCl(OH)₃ | Monoclinic | 3.0 | — |
| Izoklakeite | Pb₂₆.₄(Cu,Fe)₂(Sb,Bi)₁₉.₆S₅₇ | — | — | — |
| Jacobsite | Mn²⁺Fe³⁺₂O₄ | Cubic | — | — |
| Jacquesdietrichite | Cu₂(H₂BO₃)(OH)₃ | Orthorhombic | 2.0 | — |
| Jacutingaite | Pt₂HgSe₃ | Trigonal | — | 10.58 g/cm³ |
| Jadarite | LiNaB₃SiO₇(OH) | Monoclinic | — | 2.37 g/cm³ |
| Jadeite | NaAlSi₂O₆ | Monoclinic | — | — |
| Jaffeite | Ca₆Si₂O₇(OH)₆ | Trigonal | — | — |
| Jagowerite | — | Triclinic | — | — |
| Jahnsite-(CaFeMg) | CaFe²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O | Monoclinic | — | — |
| Jahnsite-(CaMnMn) | CaMn²⁺Mn²⁺₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(CaMnZn) | — | Monoclinic | — | — |
| Jahnsite-(MnMnFe) | Mn²⁺Mn²⁺Fe²⁺₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O | Monoclinic | — | — |
| Jahnsite-(MnMnMg) | Mn²⁺Mn²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(MnMnZn) | Mn²⁺Mn²⁺Zn₂Fe³⁺₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(NaFeMg) | NaFe³⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O | Monoclinic | — | — |
| Jahnsite-(NaMnMg) | {(Na,Ca)}{(Mn²⁺,Fe³⁺)}{(Mg,Fe³⁺)₂}{Fe³⁺₂}(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Jahnsite-(NaMnMn) | — | Monoclinic | — | — |
| Jakobssonite | CaAlF₅ | Monoclinic | — | 2.94 g/cm³ |
| Jamborite | Ni(OH,S,O)₂·nH₂O | Hexagonal | — | — |
| Jamesite | Pb₂Zn(Fe²⁺,Zn)₂Fe³⁺₄(AsO₄)₄(OH)₁₀ | Triclinic | 3.0 | 5.08 g/cm³ |
| Janchevite | Pb₇V₅+(O₈.₅☐₀.₅)Cl₂ | Tetragonal | — | — |
| Janggunite | (Mn⁴⁺,Mn²⁺,Fe³⁺)₆O₈(OH)₆ | Orthorhombic | — | — |
| Janhaugite | (Na,Ca)₃(Mn²⁺,Fe²⁺)₃(Ti,Zr,Nb)₂(Si₂O₇)₂O₂(OH,F)₂ | Monoclinic | — | — |
| Jankovićite | — | Triclinic | — | — |
| Jarandolite | CaB₃O₄(OH)₃ | Monoclinic | — | 2.48 g/cm³ |
| Jarosewichite | Mn2+3Mn3+(AsO4)(OH)6 | Orthorhombic | 4.0 | — |
| Jaskólskiite | CuₓPb₂₊ₓ(Sb,Bi)₂₋ₓS₅ (x~0.2) | Orthorhombic | 4.0 | — |
| Jasmundite | Ca₁₁(SiO₄)₄O₂S | Tetragonal | — | — |
| Jasonsmithite | — | Monoclinic | — | — |
| Jasrouxite | Ag₁₆Pb₄(Sb₂₅As₁₅)S₇₂ | Triclinic | — | — |
| Jaszczakite | [Bi₃S₃][AuS₂] | Orthorhombic | — | — |
| Javorieite | KFeCl₃ | Orthorhombic | — | — |
| Jeanbandyite | Fe³⁺xFe²⁺₁-xSn(OH)₆-xOx | Tetragonal | — | — |
| Jeankempite | Ca₅(AsO₄)₂(AsO₃OH)₂(H₂O)₇ | Triclinic | — | — |
| Jedwabite | Fe₇Ta₃ | Hexagonal | 6.5 | — |
| Jeffbenite | Mg₃Al₂Si₃O₁₂ | Tetragonal | — | — |
| Jeffreyite | (Ca,Na)₂(Be,Al)(Si₂O₇,HSi₂O₇) | Orthorhombic | — | — |
| Jennite | Ca₉Si₆O₁₆(OH)₁₀·6H₂O | Triclinic | 3.5 | — |
| Jensenite | Cu²⁺₃Te⁶⁺O₆(H₂O)₂ | Monoclinic | — | — |
| Jentschite | TlPbAs₂SbS₆ | Monoclinic | — | — |
| Jeppeite | — | Monoclinic | — | — |
| Jerrygibbsite | Mn²⁺₉(SiO₄)₄(OH)₂ | Orthorhombic | — | — |
| Jervisite | NaScSi₂O₆ | Monoclinic | 6.0 | 3.09 g/cm³ |
| Ježekite | Na₈[(UO₂)(CO₃)₃](SO₄)₂·3H₂O | Hexagonal | — | — |
| Jianmuite | ZrTi⁴⁺Ti³⁺₅Al₃O₁₆ | Tetragonal | — | — |
| Jianshuiite | MgMn⁴⁺₃O₇(H₂O)₃ | Triclinic | — | — |
| Jimboite | Mn²⁺₃[BO₃]₂ | Orthorhombic | 5.5 | — |
| Jimkrieghite | Ca(C₂H₃O₃)₂ | Orthorhombic | — | — |
| Jimthompsonite | Mg₅Si₆O₁₆(OH)₂ | Orthorhombic | — | — |
| Jingsuiite | TiB₂ | Hexagonal | — | 4.51 g/cm³ |
| Jinxiuite | Ni₁₈Bi₂SbAsS₁₆ | Tetragonal | — | — |
| Joanneumite | Cu(C₃N₃O₃H₂)₂(NH₃)₂ | Triclinic | — | — |
| Joegoldsteinite | MnCr₂S₄ | Cubic | — | 3.67 g/cm³ |
| Johanngeorgenstadtite | — | Monoclinic | — | — |
| Johannsenite | CaMn²⁺Si₂O₆ | Monoclinic | 6.0 | — |
| Johillerite | NaCuMg₃(AsO₄)₃ | Monoclinic | 3.0 | — |
| Johnbaumite | Ca₅(AsO₄)₃OH | Hexagonal | 4.5 | — |
| Johninnesite | Na₂Mn²⁺₉Mg₇(OH)₈[AsO₄]₂[Si₆O₁₇]₂ | Triclinic | — | — |
| Johnjamborite | — | Triclinic | — | — |
| Johnkoivulaite-(Cs) | — | Hexagonal | — | — |
| Johnsenite-(Ce) | Na₁₂Ce₃Ca₆Mn₃Zr₃WSi₂₅O₇₃(CO₃)(OH)₂ | Trigonal | — | — |
| Johntomaite | — | Monoclinic | — | — |