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- Orthorhombic
Orthorhombic crystal system
1,001 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Glaucochroite | CaMn²⁺(SiO₄) | 6.0 | — |
| Glaucodot | (Co₀.₅Fe₀.₅)AsS | 5.0 | 6.06 g/cm³ |
| Glecklerite | Na(C₂H₃O₃) | — | — |
| Gobbinsite | Na₅(Si₁₁Al₅)O₃₂·11H₂O | — | — |
| Godlevskite | (Ni,Fe)₉S₈ | — | — |
| Goethite | FeO(OH) | — | 4.24 g/cm³ |
| Gortdrumite | — | — | — |
| Goryainovite | Ca₂(PO₄)Cl | — | — |
| Goslarite | Zn(SO₄)·7H₂O | — | — |
| Gottardiite | Na₃Mg₃Ca₅Al₁₉Si₁₁₇O₂₇₂·93H₂O | — | — |
| Gottlobite | CaMg(VO₄)OH | 4.5 | — |
| Grammatikopoulosite | — | — | — |
| Grandidierite | (Mg,Fe²⁺)(Al,Fe³⁺)₃(SiO₄)(BO₃)O₂ | — | — |
| Griffinite | Al₂TiO₅ | — | — |
| Grischunite | NaCa₂Mn²⁺₅Fe³⁺(AsO₄)₆·2H₂O | — | — |
| Grumantite | NaSi₂O₄(OH)·H₂O | — | — |
| Grundmannite | CuBiSe₂ | — | — |
| Guangyuanite | Pb₃Cl₃(Se⁴⁺O₃)(OH) | — | — |
| Guilleminite | Ba(UO₂)₃(Se⁴⁺O₃)₂O₂·3H₂O | 2.0 | — |
| Gungerite | TlAs₅Sb₄S₁₃ | — | — |
| Gustavite | AgPbBi₃S₆ | — | — |
| Gwihabaite | (NH₄)(NO₃) | — | — |
| Gysinite-(Ce) | PbCe(CO₃)₂(OH)(H₂O) | — | — |
| Gysinite-(Nd) | PbNd(CO₃)₂(OH)·H₂O | — | — |
| Günterblassite | (K,Ca,Ba,Na,☐)₃Fe[(Si,Al)₁₃O₂₅(OH,O)₄]·7H₂O | 4.0 | — |
| Hagstromite | — | — | — |
| Halilsarpite | — | — | — |
| Hambergite | Be₂BO₃(OH) | 7.5 | 2.38 g/cm³ |
| Hammarite | Cu₂Pb₂Bi₄S₉ | — | — |
| Hanauerite | AgHgSI | — | 6.52 g/cm³ |
| Hanawaltite | Hg⁺₆Hg²⁺O₃Cl₂ | — | — |
| Haradaite | SrVSi₂O₇ | — | — |
| Harmunite | CaFe₂O₄ | — | — |
| Harstigite | Ca₆(Mn,Mg)Be₄Si₆(O,OH)₂₄ | — | — |
| Hashemite | Ba(CrO₄) | — | 4.51 g/cm³ |
| Haycockite | Cu₄Fe₅S₈ | — | — |
| Hazenite | KNaMg₂(PO₄)₂ * 14H₂O | — | — |
| Heisenbergite | (UO₂)(OH)₂·H₂O | — | — |
| Heklaite | KNaSiF₆ | — | — |
| Hemimorphite | Zn₄Si₂O₇(OH)₂·H₂O | — | — |
| Hendersonite | (Ca,Sr)₁.₃V₆O₁₆ * 6H₂O | — | — |
| Hennomartinite | SrMn³⁺₂(Si₂O₇)(OH)₂ * H₂O | — | — |
| Henrysunite | Na₂(C₂H₃O₃)₂(H₂O) | — | — |
| Hermannroseite | CaCu(PO₄)(OH) | — | 4.08 g/cm³ |
| Herzenbergite | SnS | — | 4.90 g/cm³ |
| Heterosite | Fe³⁺(PO₄) | — | — |
| Heyrovskýite | Pb₆Bi₂S₉ | — | — |
| Hillebrandite | Ca₂(SiO₃)(OH)₂ | — | — |
| Hillesheimite | (K,Ca,Ba,☐)₂(Mg,Fe,Ca,☐)₂[(Si,Al)₁₃O₂₃(OH)₆](OH)·8H₂O | — | — |
| Hinokageite | MnMg(SiO₄) | — | — |
| Hiroseite | — | — | — |
| Hizenite-(Y) | Ca₂Y₆(CO₃)₁₁·14H₂O | — | — |
| Hochleitnerite | [(H₂O)K]Mn₂(Ti₂Fe³⁺)(PO₄)₄O₂(H₂O)₁₀·4H₂O | — | — |
| Hoelite | C₁₄H₈O₂ | — | 1.42 g/cm³ |
| Holmquistite | Li₂(Mg₃Al₂)Si₈O₂₂(OH)₂ | — | — |
| Honeaite | Au₃TlTe₂ | — | — |
| Hopeite | Zn₃(PO₄)₂·4H₂O | 3.5 | — |
| Horváthite-(Y) | — | 4.0 | — |
| Hubbardite | Mg(H₂O)₆[(UO₂)₂O(OH)(SO₄)]₂·8H₂O | — | — |
| Humite | Mg₇(SiO₄)₃(F,OH)₂ | 6.0 | — |
| Hutchinsonite | TlPbAs₅S₉ | — | — |
| Hyblerite | Pb₄Bi₂(SO₄)₂(CO₃)O₄ | — | — |
| Hydroterskite | Na₂ZrSi₆O₁₂(OH)₆ | — | — |
| Hydroxylbenyacarite | (H₂O)₂Mn₂(Ti₂Fe)(PO₄)₄[O(OH)](H₂O)₁₀·4H₂O | — | — |
| Ianthinite | U⁴⁺₂(UO₂)₄O₆(OH)₄·9H₂O | — | — |
| Idrialite | C₂₂H₁₄ | — | — |
| Ilinskite | (Na,K)Cu₅(SeO₃)₂O₂Cl₃ | 1.5 | — |
| Ilvaite | CaFe³⁺Fe²⁺₂(Si₂O₇)O(OH) | — | — |
| Imandrite | Na₁₂Ca₃Fe³⁺₂(Si₆O₁₈)₂ | — | — |
| Iodine (native) | I₂ | — | — |
| Iriginite | (UO₂)Mo₂O₇·3H₂O | — | — |
| Isselite | Cu₆(SO₄)(OH)₁₀(H₂O)₄·H₂O | — | — |
| Itelmenite | Na₄Mg₃Cu₃(SO₄)₈ | — | — |
| Itoigawaite | SrAl₂Si₂O₇(OH)₂·H₂O | — | — |
| Itoite | Pb₃Ge₄+(SO₄)₂O₂(OH)₂ | — | 6.67 g/cm³ |
| Ixiolite | (Ta,Mn,Nb)O₂ | — | — |
| Ixiolite-(Sc) | (Ta₀.₅Sc₀.₅)O₂ | — | — |
| Jacquesdietrichite | Cu₂(H₂BO₃)(OH)₃ | 2.0 | — |
| Janggunite | (Mn⁴⁺,Mn²⁺,Fe³⁺)₆O₈(OH)₆ | — | — |
| Jarosewichite | Mn2+3Mn3+(AsO4)(OH)6 | 4.0 | — |