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Monoclinic crystal system
1,774 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Clinohedrite | CaZn(SiO₄) * H₂O | — | — |
| Clinohumite | Mg₉(SiO₄)₄F₂ | 6.0 | — |
| Clinojimthompsonite | (Mg,Fe)₅Si₆O₁₆(OH)₂ | — | — |
| Clinokurchatovite | Ca(Mg,Fe²⁺,Mn²⁺)[B₂O₅] | — | — |
| Clinometaborite | HBO₂ | — | 2.10 g/cm³ |
| Clinophosinaite | Na₁₂(Ca,Sr)₄(Si₄O₁₂)(PO₄)₄ | — | — |
| Clinoptilolite-Ca | Ca₃(Si₃₀Al₆)O₇₂*₂₀H₂O | — | — |
| Clinoptilolite-K | K₆(Si₃₀Al₆)O₇₂*₂₀H₂O | — | — |
| Clinoptilolite-Na | Na₆(Si₃₀Al₆)O₇₂*₂₀H₂O | — | — |
| Clinosafflorite | CoAs₂ | — | 7.55 g/cm³ |
| Clinosulphur | S | — | — |
| Clinotobermorite | Ca₄Si₆O₁₇(H₂O)₂·(Ca·3H₂O) | — | — |
| Clinoungemachite | (Na, K, Fe, SO₄) | — | — |
| Clinozoisite | Ca₂Al₃(Si₂O₇)(SiO₄)O(OH) | — | — |
| Clintonite | CaAlMg₂(SiAl₃)O₁₀(OH)₂ | — | — |
| Cloncurryite | Cu₀.₅(VO)₀.₅Al₂(PO₄)₂F₂·5H₂O | — | — |
| Cobaltkieserite | Co(SO₄)(H₂O) | — | — |
| Cobaltoblödite | Na₂Co(SO₄)₂·4H₂O | — | — |
| Cobaltzippeite | Co(UO₂)₂(SO₄)O₂ * 3.₅H₂O | — | — |
| Coesite | SiO₂ | — | 2.63 g/cm³ |
| Coiraite | (Pb,Sn)₁₂.₅As₃Sn₅FeS₂₈ | — | — |
| Colchesterite | Bi³⁺₂Mo⁶⁺₂O₉ | — | — |
| Colemanite | CaB₃O₄(OH)₃·H₂O | 4.5 | — |
| Colomeraite | NaTi³⁺Si₂O₆ | — | — |
| Cornwallite | Cu₅(AsO₄)₂(OH)₄ | 4.5 | — |
| Coronadite | Pb(Mn⁴⁺₆Mn³⁺₂)O₁₆ | — | — |
| Corvusite | (Na,Ca,K)₁₋ₓ(V⁵⁺,V⁴⁺,Fe²⁺)₈O₂₀·4H₂O | — | — |
| Cranswickite | Mg(SO₄)·4H₂O | — | — |
| Crawfordite | Na₃Sr(CO₃)(PO₄) | — | — |
| Crednerite | CuMnO₂ | — | 5.44 g/cm³ |
| Creedite | Ca₃Al₂(SO₄)(OH)₂F₈·2H₂O | 4.0 | — |
| Crocoite | PbCrO₄ | — | 6.11 g/cm³ |
| Cryobostryxite | KZnCl₃·2H₂O | — | — |
| Cryolite | Na₃AlF₆ | — | 3.06 g/cm³ |
| Cryptomelane | K(Mn⁴⁺₇Mn³⁺)O₁₆ | — | — |
| Cryptophyllite | K₂Ca[Si₄O₁₀]·5H₂O | — | — |
| Cummingtonite | ☐Mg₂Mg₅Si₈O₂₂(OH)₂ | — | — |
| Cupromakopavonite | Cu₈Pb₄Ag₃Bi₁₉S₃₈ | — | — |
| Cupromakovickyite | Cu₄AgPb₂Bi₉S₁₈ | — | — |
| Cuproneyite | Cu₇Pb₂₇Bi₂₅S₆₈ | — | — |
| Cupropavonite | Cu₀.₉Ag₀.₅Pb₀.₆Bi₂.₅S₅ | — | — |
| Curetonite | Ba(Al,Ti)(PO₄)(OH,O)F | — | — |
| Cuspidine | Ca₈(Si₂O₇)₂F₄ | — | — |
| Cymrite | BaAl₂Si₂(O,OH)₈ * H₂O | — | — |
| Dachiardite-Ca | Ca₂(Si₂₀Al₄)O₄₈·13H₂O | — | — |
| Dachiardite-K | K₄(Si₂₀Al₄)O₄₈·13H₂O | — | — |
| Dachiardite-Na | Na₄(Si₂₀Al₄)O₄₈·13H₂O | — | — |
| Dacostaite | K(Mg₂Al)[Mg(H₂O)₆]₂(AsO₄)₂F₆·2H₂O | — | — |
| Daliranite | PbHgAs₂S₆ | — | — |
| Dantopaite | Ag₅Bi₁₃S₂₂ | — | — |
| Darapskite | Na₃(SO₄)(NO₃)·H₂O | 2.5 | — |
| Dashkovaite | Mg(HCOO)₂·2H₂O | 1.0 | 1.75 g/cm³ |
| Datolite | CaB(SiO₄)(OH) | — | — |
| Davidbrownite-(NH4) | (NH₄)₅(V₄+O)₂(C₂O₄)[PO₂.₇₅(OH)₁.₂₅]₄·3H₂O | — | — |
| Davisite | CaScAlSiO₆ | — | — |
| Davreuxite | Mn²⁺Al₆Si₄O₁₇(OH)₂ | — | — |
| Decrespignyite-(Y) | Y₄Cu(CO₃)₄Cl(OH)₅·2H₂O | — | — |
| Dekatriasartorite | TlPb₅₈As₉₇S₂₀₄ | — | — |
| Delhuyarite-(Ce) | Ce₄Mg(Fe³⁺₂W)☐(Si₂O₇)₂O₆(OH)₂ | — | — |
| Delindeite | Ba₂Ti₂(Na₂☐)Ti(Si₂O₇)₂(OH)₂(H₂O)₂O₂ | — | — |
| Deloryite | Cu₄(UO₂)Mo₂O₈(OH)₆ | — | — |
| Delrioite | Sr(V⁵⁺O₃)₂·4H₂O | — | — |
| Dendoraite-(NH4) | — | — | — |
| Denisovite | K₁₄+x(Ca,Na,Mn,Fe)₄₈[Si₆₀O₁₆₂]F₁₆(Ox,OH₄-x)*₂H₂O | — | — |
| Derbylite | Fe³⁺₄Ti⁴⁺₃Sb³⁺O₁₃(OH) | — | — |
| Dervillite | Ag₂AsS₂ | — | — |
| Deveroite-(Ce) | Ce₂(C₂O₄)₃·10H₂O | — | — |
| Devilline | CaCu₄(SO₄)₂(OH)₆·3H₂O | 2.5 | — |
| Diaphorite | Ag₃Pb₂Sb₃S₈ | — | 6.04 g/cm³ |
| Dickite | Al₂Si₂O₅(OH)₄ | — | — |
| Dickthomssenite | MgV₂O₆·7H₂O | 2.5 | — |
| Diegogattaite | Na₂CaCu₂Si₈O₂₀·H₂O | — | — |
| Dietrichite | ZnAl₂(SO₄)₄·22H₂O | 2.0 | — |
| Dietzeite | Ca₂(IO₃)₂(CrO₄)·H₂O | — | — |
| Dingdaohengite-(Ce) | (Ce,La)₄Fe²⁺(Ti,Fe²⁺,Mg,Fe³⁺)₂Ti₂Si₄O₂₂ | — | — |
| Dinilawiite | [Pb₄O₂Al(OH)₅]₂(S₂O₃)₂·H₂(S₂O₃)(H₂O)₅ | — | — |
| Diopside | CaMgSi₂O₆ | — | 3.15 g/cm³ |
| Dissakisite-(Ce) | {CaCe}{Al₂Mg}(Si₂O₇)(SiO₄)O(OH) | — | — |
| Dissakisite-(La) | {CaLa}{Al₂Mg}(Si₂O₇)(SiO₄)O(OH) | — | — |
| Djurleite | Cu₃₁S₁₆ | — | — |