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Triclinic crystal system
516 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Ferrarisite | Ca₅(AsO₃OH)₂(AsO₄)₂·9H₂O | — | — |
| Ferrivauxite | Fe³⁺Al₂(PO₄)₂(OH)₃·5H₂O | — | — |
| Ferroinnelite | Ba₄Ti₂Na(NaFe²⁺)Ti(Si₂O₇)₂[(SO₄)(PO₄)]O₂[O(OH)] | — | — |
| Ferrorhodonite | CaMn₃Fe(Si₅O₁₅) | — | — |
| Fersmanite | — | — | — |
| Fingerite | — | — | — |
| Flaggite | — | — | — |
| Flatimerite | [Al₁₃(OH)₂₄(H₂O)₂₄][V⁵⁺₉V⁴⁺O₂₈]·[(SO₄)₄(H₂O)₂₄] | — | — |
| Flörkeite | (K₃Ca₂Na)[Al₈Si₈O₃₂]·12H₂O | — | — |
| Fogoite-(Y) | Ca₂Y₂Na₃Ti(Si₂O₇)₂(OF)F₂ | — | — |
| Footemineite | Ca₂Mn²⁺₅Be₄(PO₄)₆(OH)₄·6H₂O | — | — |
| Forêtite | — | — | — |
| Frolovite | Ca[B(OH)₄]₂ | — | — |
| Fulbrightite | — | — | — |
| Gabrielite | Tl₂AgCu₂As₃S₇ | — | — |
| Galgenbergite-(Ce) | CaCe₂(CO₃)₄·H₂O | — | — |
| Galliskiite | Ca₄Al₂(PO₄)₂F₈·5H₂O | — | — |
| Gearksutite | CaAlF₄(OH)·H₂O | — | — |
| Geminite | Cu(HAsO₄)·H₂O | — | — |
| Gerdtremmelite | (Zn,Fe)(Al,Fe)₂(AsO₄)(OH)₅ | — | — |
| Gerenite-(Y) | (Ca,Na)₂(Y,REE)₃Si₆O₁₈·2H₂O | — | — |
| Ghiaraite | CaCl₂·4H₂O | — | — |
| Gilmarite | Cu²⁺₃(AsO₄)(OH)₃ | — | — |
| Gobelinite | — | — | — |
| Goldquarryite | — | — | — |
| Greenlizardite | (NH₄)Na(UO₂)₂(SO₄)₂(OH)₂·4H₂O | — | — |
| Grguricite | — | — | — |
| Grigorievite | Cu₃Fe³⁺₂Al₂(VO₄)₆ | — | — |
| Guastoniite-(Y) | Pb₄(YCa)(Si₈B₄O₂₈)F | — | — |
| Götzenite | Ca₄NaCa₂Ti(Si₂O₇)₂(OF)F₂ | — | — |
| Hainite-(Y) | (Ca₃Y)Na(NaCa)Ti(Si₂O₇)₂(OF)F₂ | — | — |
| Hallimondite | Pb₂(UO₂)(AsO₄)₂ * nH₂O | — | — |
| Hansesmarkite | Ca₂Mn₂Nb₆O₁₉·20H₂O | — | — |
| Hartkoppeite | Ca₄Mn²⁺Mo⁶⁺₆As⁵⁺₄O₃₂(OH)₂(H₂O)₁₄·5H₂O | — | — |
| Hatchite | AgPbTlAs₂S₅ | — | — |
| Hellyerite | — | — | — |
| Hemihedrite | ZnPb₁₀(CrO₄)₆(SiO₄)₂(OH)₂ | — | — |
| Henmilite | — | — | — |
| Heyerdahlite | Na₃Mn₇Ti₂(Si₄O₁₂)₂O₂(OH)₄F(H₂O)₂ | — | — |
| Hiortdahlite | (Na,Ca)₂Ca₄Zr(Mn,Ti,Fe)(Si₂O₇)₂(F,O)₄ | — | — |
| Hloušekite | (Ni,Co)Cu₄(AsO₄)₂(AsO₃OH)₂·9H₂O | — | — |
| Hohmannite | Fe³⁺₂(SO₄)₂O * 8H₂O | 3.0 | — |
| Horiite | Ba₂Mn₂Mn₄Ti₂(Si₂O₇)₂(PO₄)₂O₂(OH)₂ | — | — |
| Hotsonite | — | — | — |
| Howardevansite | — | — | — |
| Hubeite | Ca₂Mn²⁺Fe³⁺[HSi₄O₁₃]·2H₂O | — | — |
| Huemulite | Na₄Mg(V₁₀O₂₈)·24H₂O | — | 2.36 g/cm³ |
| Hughesite | Na₃AlV₁₀O₂₈·22H₂O | — | — |
| Huizingite-(Al) | [(NH₄)₉(SO₄)₂][(Al,Fe³⁺)₃(OH)₂(H₂O)₄(SO₄)₆] | — | — |
| Hummerite | KMgV⁵⁺₅O₁₄·8H₂O | — | — |
| Hungchaoite | Mg(B₄O₇) * 9H₂O | — | — |
| Huntingdonite | Pb₁₉Sb₁₆As₆S₅₁Cl₂ | — | — |
| Hyalotekite | (Pb,Ba,K)₄(Ca,Y)₂(B,Be)₂(Si,B)₂Si₈O₂₈(F,Cl) | — | — |
| Hydrodresserite | BaAl₂(CO₃)₂(OH)₄ * 3H₂O | — | — |
| Hydropascoite | Ca₃(V₁₀O₂₈)*₂₄H₂O | — | — |
| Iimoriite-(Y) | Y₂[SiO₄][CO₃] | — | — |
| Inesite | Ca₂(Mn,Fe)₇Si₁₀O₂₈(OH)₂·5H₂O | — | — |
| Innelite | Ba₄Ti₂Na(NaCa)Ti(Si₂O₇)₂[(SO₄)(PO₄)]O₂[O(OH)] | — | — |
| Iranite | — | — | — |
| Jagowerite | — | — | — |
| Jamesite | Pb₂Zn(Fe²⁺,Zn)₂Fe³⁺₄(AsO₄)₄(OH)₁₀ | 3.0 | 5.08 g/cm³ |
| Jankovićite | — | — | — |
| Jasrouxite | Ag₁₆Pb₄(Sb₂₅As₁₅)S₇₂ | — | — |
| Jeankempite | Ca₅(AsO₄)₂(AsO₃OH)₂(H₂O)₇ | — | — |
| Jennite | Ca₉Si₆O₁₆(OH)₁₀·6H₂O | 3.5 | — |
| Jianshuiite | MgMn⁴⁺₃O₇(H₂O)₃ | — | — |
| Joanneumite | Cu(C₃N₃O₃H₂)₂(NH₃)₂ | — | — |
| Johannite | Cu(UO₂)₂(SO₄)₂(OH)₂·8H₂O | 2.0 | — |
| Johninnesite | Na₂Mn²⁺₉Mg₇(OH)₈[AsO₄]₂[Si₆O₁₇]₂ | — | — |
| Johnjamborite | — | — | — |
| Joteite | Ca₂CuAl[AsO₄][AsO₃(OH)]₂(OH)₂·5H₂O | — | — |
| Juabite | — | — | — |
| Jôkokuite | — | — | — |
| Kamarizaite | Fe³⁺₃(AsO₄)₂(OH)₃·3H₂O | — | — |
| Kamitugaite | PbAl[(UO₂)₅(PO₄)₂.₃₈(AsO₄)₀.₆₂O₂(OH)₂] * 1₁.₅H₂O | — | — |
| Kaolinite | Al₂Si₂O₅(OH)₄ | 1.0 | — |
| Kapitsaite-(Y) | (Ba,K,Pb)₄(Y,Ca)₂Si₈(B,Si)₄O₂₈F | — | — |
| Kapundaite | CaNaFe³⁺₄(PO₄)₄(OH)₃·5H₂O | — | — |
| Kayrobertsonite | [MnAl₂(PO₄)₂(OH)₂(H₂O)₄]*₂H₂O | — | — |
| Kazanskyite | Ba☐TiNbNa₃Ti(Si₂O₇)₂O₂(OH)₂(H₂O)₂ | — | — |