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Monoclinic crystal system
1,774 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Fluoro-riebeckite | ☐Na₂(Fe²⁺₃Fe³⁺₂)Si₈O₂₂F₂ | — | — |
| Fluoro-taramite | NaCaNa(Mg₃Al₂)Al₂Si₆O₂₂F₂ | — | — |
| Fluoro-tremolite | ☐{Ca₂}{Mg₅}(Si₈O₂₂)F₂ | — | — |
| Fluorokinoshitalite | BaMg₃Al₂Si₂O₁₀F₂ | — | — |
| Fluorophlogopite | KMg₃(Si₃Al)O₁₀F₂ | — | — |
| Fluorotetraferriphlogopite | KMg₃Fe³⁺Si₃O₁₀F₂ | — | — |
| Flurlite | Zn₃Mn²⁺Fe³⁺(PO₄)₃(OH)₂·9H₂O | — | — |
| Folvikite | Sb⁵⁺Mn³⁺(Mg,Mn²⁺)₁₀O₈(BO₃)₄ | 6.0 | — |
| Fontarnauite | (Na,K)₂(Sr,Ca)(SO₄)[B₅O₈(OH)]·2H₂O | — | — |
| Foordite | — | — | — |
| Fornacite | CuPb₂(CrO₄)(AsO₄)(OH) | 2.5 | 6.27 g/cm³ |
| Fraipontite | (Zn,Al)₃(Si,Al)₂O₅(OH)₄ | — | — |
| Frankhawthorneite | Cu₂Te⁶⁺O₄(OH)₂ | — | — |
| Franksousaite | PbCu(Se⁶⁺O₄)(OH)₂ | — | — |
| Fransoletite | — | — | — |
| Françoisite-(Nd) | — | — | — |
| Freieslebenite | AgPbSbS₃ | — | — |
| Friedelite | Mn²⁺₈Si₆O₁₅(OH,Cl)₁₀ | — | — |
| Froodite | — | 2.5 | — |
| Fuchunite | Ba(C₂H₃O₃)₂(C₂H₄O₃)₂ | — | — |
| Fukalite | Ca₄[Si₂O₆][CO₃](OH)₂ | — | — |
| Gadolinite-(Ce) | Ce₂Fe²⁺Be₂Si₂O₁₀ | — | — |
| Gadolinite-(Nd) | Nd₂Fe²⁺Be₂O₂(SiO₄)₂ | — | — |
| Gadolinite-(Y) | Y₂Fe²⁺Be₂Si₂O₁₀ | — | — |
| Galuskinite | Ca₇(SiO₄)₃(CO₃) | — | — |
| Garmite | CsLiMg₂(Si₄O₁₀)F₂ | — | — |
| Garrelsite | Ba₃NaSi₂B₇O₁₆(OH)₄ | — | — |
| Garronite-Na | Na₆(Al₆Si₁₀O₃₂)·8.5H₂O | — | — |
| Gasparite-(Ce) | Ce(AsO₄) | — | — |
| Gasparite-(La) | La(AsO₄) | — | 5.53 g/cm³ |
| Gatelite-(Ce) | CaCe₃Al₂(Al,Mg)(Mg,Fe²⁺,Al)(Si₂O₇)(SiO₄)₃(O,F)(OH,O)₂ | — | — |
| Gatewayite | Ca₆(H₂O)23(As³⁺V⁴⁺₃V⁵⁺₉As⁵⁺₆O₅₁)·8H₂O | 2.0 | — |
| Gatumbaite | CaAl₂(PO₄)₂(OH)₂·H₂O | — | — |
| Gauthierite | KPb[(UO₂)₇O₅(OH)₇]·8H₂O | — | 5.44 g/cm³ |
| Gayite | NaMnFe₅(PO₄)₄(OH)₆·2H₂O | — | — |
| Gaylussite | Na₂Ca(CO₃)₂·5H₂O | — | 2.00 g/cm³ |
| Gebhardite | Pb₈(As₂O₅)₂OCl₆ | — | — |
| Gelosaite | BiMo⁶⁺₂₋₅ₓMo⁵⁺₆ₓO₇(OH)·H₂O (0 < x < 0.4) | — | — |
| Geocronite | Pb₁₄(Sb,As)₆S₂₃ | 2.5 | — |
| Georgbokiite | Cu₅(SeO₃)₂O₂Cl₂ | — | — |
| George-ericksenite | Na₆CaMg(IO₃)₆(CrO₄)₂·12H₂O | — | — |
| Georgeliuite | Ca₂Mn³⁺₃O₂(AsO₄)₃(H₂O)₂·H₂O | — | — |
| Gerstleyite | Na₂(Sb,As)₈S₁₃·2H₂O | — | — |
| Getchellite | AsSbS₃ | — | — |
| Geuerite | Ag₂Tl₄Pb₄As₂₂S₄₀ | — | — |
| Giacovazzoite | — | — | — |
| Gibbsite | Al(OH)₃ | — | — |
| Giessenite | (Cu,Fe)₂Pb₂₆.₄(Bi,Sb)₁₉.₆S₅₇ | 2.5 | — |
| Giftgrubeite | CaMn₂Ca₂(AsO₄)₂(AsO₃OH)₂·4H₂O | — | — |
| Gilalite | Cu₅Si₆O₁₇·7H₂O | — | — |
| Giniite | Fe²⁺Fe³⁺₄(PO₄)₄(OH)₂·2H₂O | — | — |
| Ginorite | Ca₂B₁₄O₂₀(OH)₆·5H₂O | — | — |
| Girdite | — | — | — |
| Girvasite | NaCa₂Mg₃(PO₄)₃(CO₃)(H₂O)₆ | — | — |
| Gismondine-Ca | Ca₂(Si₄Al₄)O₁₆·8H₂O | — | — |
| Gittinsite | CaZrSi₂O₇ | — | — |
| Giuşcăite | Ag₂Tl₄Pb₄As₂₀Sb₂S₄₀ | — | — |
| Gjerdingenite-Ca | K₂Ca(Nb,Ti)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O | — | — |
| Gjerdingenite-Na | K₂Na(Nb,Ti)₄(Si₄O₁₂)₂(OH,O)₄·5H₂O | — | — |
| Gladiusite | — | — | — |
| Glauberite | Na₂Ca(SO₄)₂ | — | 2.84 g/cm³ |
| Glaucophane | ☐Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂ | 6.0 | — |
| Glaukosphaerite | CuNi(CO₃)(OH)₂ | 3.5 | — |
| Glikinite | Zn₃O(SO₄)₂ | — | 3.90 g/cm³ |
| Glushinskite | Mg(C₂O₄)·2H₂O | 2.0 | 1.85 g/cm³ |
| Goldhillite | Cu₅Zn(AsO₄)₂(OH)₆·H₂O | — | — |
| Goldichite | KFe(SO₄)₂·4H₂O | — | — |
| Goosecreekite | Ca(Si₆Al₂)O₁₆·5H₂O | — | — |
| Gorbunovite | CsLi₂(Ti,Fe)Si₄O₁₀(F,OH,O)₂ | — | — |
| Gorceixite | BaAl₃(PO₄)(PO₃OH)(OH)₆ | — | — |
| Gowerite | Ca[B₅O₈(OH)][B(OH)₃]·3H₂O | — | — |
| Graftonite | Fe²⁺Fe²⁺₂(PO₄)₂ | — | — |
| Graftonite-(Ca) | CaFe²⁺₂(PO₄)₂ | — | — |
| Graftonite-(Mn) | MnFe²⁺₂(PO₄)₂ | — | — |
| Grandaite | Sr₂Al(AsO₄)₂(OH) | — | — |
| Grandreefite | Pb₂(SO₄)F₂ | — | 6.69 g/cm³ |
| Grandviewite | Cu₃Al₂(SO₄)(OH)₁₀·H₂O | — | — |
| Grantsite | (Na,Ca)²⁺x(V₅+,V₄+)₆O₁₆ * 4H₂O | — | — |
| Graţianite | MnBi₂S₄ | — | — |
| Greenalite | (Fe²⁺,Fe³⁺)₂-₃Si₂O₅(OH)₄ | — | — |