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Monoclinic crystal system
1,774 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Grenmarite | Na₂Zr₂Na₂MnZr(Si₂O₇)₂O₂F₂ | — | — |
| Gritsenkoite | CoMg₂(AsO₄)₂(H₂O)₈ | — | — |
| Groatite | ☐NaCaMn₂(PO₄)(HPO₄)₂ | — | — |
| Grossite | CaAl₄O₇ | — | 2.90 g/cm³ |
| Grossmanite | Ca(Ti³⁺,Mg,Ti⁴⁺)AlSiO₆ | — | — |
| Grumiplucite | HgBi₂S₄ | — | 6.77 g/cm³ |
| Grunerite | ☐Fe²⁺₂Fe²⁺₅Si₈O₂₂(OH)₂ | — | — |
| Guanacoite | Cu₂Mg₃(OH)₄(AsO₄)₂·4H₂O | 3.0 | — |
| Gudmundite | FeSbS | — | 7.07 g/cm³ |
| Guettardite | PbAsSbS₄ | — | — |
| Guildite | CuFe³⁺(SO₄)₂(OH)·4H₂O | — | — |
| Guimarãesite | Ca₂Be₄Zn₅(PO₄)₆(OH)₄·6H₂O | — | — |
| Gunningite | Zn(SO₄)(H₂O) | — | — |
| Gunterite | Na₄Ca(V₁₀O₂₈)·20H₂O | — | — |
| Gypsum | CaSO₄·2H₂O | 2.0 | 2.32 g/cm³ |
| Görgeyite | K₂Ca₅(SO₄)₆·H₂O | — | — |
| Hagendorfite | NaCaMn²⁺Fe²⁺₂(PO₄)₃ | — | — |
| Haigerachite | KFe³⁺₃(HPO₄)₂(H₂PO₄)₆ * 4H₂O | — | — |
| Haiweeite | Ca(UO₂)₂Si₅O₁₂(OH)₂·3H₂O | 3.5 | — |
| Halloysite | Al₂Si₂O₅(OH)₄ | — | — |
| Halotrichite | Fe²⁺Al₂(SO₄)₄·22H₂O | 1.5 | — |
| Hancockite | CaPb(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH) | — | — |
| Hanjiangite | Ba₂Ca(V³⁺Al)(AlSi₃O₁₀)(OH)₂F(CO₃)₂ | — | — |
| Hansblockite | (Cu,Hg)(Bi,Pb)Se₂ | — | — |
| Hanswilkeite | KFeS₂ | — | — |
| Harmotome | Ba₂(Si₁₂Al₄)O₃₂·12H₂O | — | — |
| Hasanovite | — | — | — |
| Hastingsite | NaCa₂(Fe²⁺₄Fe³⁺)(Si₆Al₂)O₂₂(OH)₂ | — | — |
| Hatertite | Na₂(Ca,Na)(Fe³⁺,Cu)₂(AsO₄)₃ | — | — |
| Hayyanite | Cu₅Ag₁₁Pb₇₆Sb₇₁As₁₇(As²⁺)₈S₂₂₄ | — | — |
| Hechtsbergite | Bi₂(VO₄)O(OH) | 4.5 | — |
| Hectorfloresite | Na₉(IO₃)(SO₄)₄ | 2.0 | — |
| Hectorite | H₂LiMgNaO₁₂Si₄²⁻ | — | — |
| Hedenbergite | — | — | — |
| Heflikite | (CaCa)(AlAlSc)O[Si₂O₇][SiO₄](OH) | — | — |
| Heftetjernite | — | 4.5 | 6.44 g/cm³ |
| Heidornite | Na₂Ca₃B₅O₈(SO₄)₂Cl(OH)₂ | — | — |
| Heimite | PbCu₂(AsO₄)(OH)₃·2H₂O | — | — |
| Heinrichite | Ba(UO₂)₂(AsO₄)₂·10H₂O | 2.5 | — |
| Hejtmanite | Ba₂(Mn²⁺)₄Ti₂(Si₂O₇)₂O₂(OH)₂F₂ | — | — |
| Hendekasartorite | Tl₂Pb₄₈As₈₂S₁₇₂ | — | — |
| Hephaistosite | TlPb₂Cl₅ | — | — |
| Heptasartorite | Tl₇Pb₂₂As₅₅S₁₀₈ | — | — |
| Herderite | CaBePO₄(F,OH) | — | 3.02 g/cm³ |
| Hereroite | [Pb₃₂(O,☐)₂₁](AsO₄)₂[(Si,As,V,Mo]O₄)₂Cl₁₀ | — | — |
| Hermannjahnite | CuZn(SO₄)₂ | — | — |
| Hessite | Ag₂Te | — | 8.25 g/cm³ |
| Heteromorphite | Pb₇Sb₈S₁₉ | — | — |
| Heulandite-Ba | (Ba,Ca,K)₅(Si₂₇Al₉)O₇₂ * 2₂H₂O | — | — |
| Heulandite-Ca | (Ca,Na)₅(Si₂₇Al₉)O₇₂ * 2₆H₂O | — | — |
| Heulandite-K | (K,Ca,Na)₅(Si₂₇Al₉)O₇₂ · 26H₂O | — | — |
| Heulandite-Na | (Na,Ca,K)₆(Si,Al)₃₆O₇₂ · 22H₂O | — | — |
| Heulandite-Sr | (Sr,Na,Ca)₅(Si₂₇Al₉)O₇₂ · 24H₂O | — | — |
| Hewettite | CaV⁵⁺₆O₁₆·9H₂O | — | — |
| Hexahydrite | Mg(SO₄)(H₂O)₆ | — | — |
| Hexahydroborite | — | — | — |
| Hezuolinite | (Sr,REE)₄Zr(Ti,Fe³⁺,Fe²⁺)₂Ti₂O₈(Si₂O₇)₂ | — | — |
| Hilarionite | Fe³⁺₂(SO₄)(AsO₄)(OH)·₆H₂O | — | — |
| Hilgardite | — | — | — |
| Hingganite-(Ce) | BeCe(SiO₄)(OH) | — | — |
| Hingganite-(Nd) | — | — | — |
| Hingganite-(Yb) | BeYbSiO₄(OH) | — | — |
| Hisingerite | Fe₂Si₂O₅(OH)₄·2H₂O | 3.0 | — |
| Hjalmarite | {Na}{NaMn}{Mg₅}Si₈O₂₂(OH)₂ | — | — |
| Hodgkinsonite | Mn²⁺Zn₂(SiO₄)(OH)₂ | — | — |
| Hodrušite | Cu₄Bi₆S₁₁ | — | — |
| Hoganite | Cu(CH₃COO)₂·H₂O | 1.5 | — |
| Hogarthite | (Na,K)₂CaTi₂Si₁₀O₂₆·8H₂O | — | — |
| Hokkaidoite | C₂₂H₁₂ | — | — |
| Holdawayite | Mn₆(CO₃)₂(OH)₇(Cl,OH) | — | — |
| Hollandite | Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆ | 6.0 | — |
| Hollisterite | Al₃Fe | — | — |
| Holubite | Ag₃Pb₆(Sb₈Bi₃)S₂₄ | — | — |
| Honzaite | Ni₂(AsO₃OH)₂·5H₂O | — | — |
| Hoperanchite | (NH₄)₂(S₂O₃) | — | — |
| Hopmannite | Ba₂(Ti₅Fe)O₁₃ | — | — |
| Horákite | — | — | — |
| Housleyite | Pb₆CuTe₄O₁₈(OH)₂ | — | — |
| Howlite | Ca₂B₅SiO₉(OH)₅ | — | — |
| Huangshanite | Fe³⁺TaO₄ | — | — |