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Monoclinic crystal system
1,774 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Loseyite | (Mn²⁺,Zn,Mg)₄Zn₃(CO₃)₂(OH)₁₀ | — | — |
| Luanshiweiite | KLiAl₁.₅(Si₃.₅Al₀.₅)O₁₀(OH)₂ | — | — |
| Luberoite | Pt₅Se₄ | — | 12.67 g/cm³ |
| Luboržákite | Mn₂AsSbS₅ | — | — |
| Lucasite-(Ce) | CeTi₂O₅(OH) | — | — |
| Lucasite-(La) | LaTi₂O₅(OH) | — | — |
| Ludlamite | Fe²⁺₃(PO₄)₂·4H₂O | — | — |
| Luinaite-(OH) | (Na,☐)(Fe²⁺,Mg)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄ | — | — |
| Lussierite | Na₁₀[(UO₂)(SO₄)₄](SO₄)₂(H₂O)₃ | — | — |
| Luxembourgite | AgCuPbBi₄Se₈ | 3.0 | — |
| Låvenite | — | — | — |
| Macfallite | Ca₂Mn³⁺₃(SiO₄)(Si₂O₇)(OH)₃ | — | — |
| Machiite | Al₂Ti₃O₉ | — | — |
| Macquartite | Cu₂Pb₇(CrO₄)₄(SiO₄)₂(OH)₂ | — | — |
| Macraeite | [K(H₂O)]Mn₂(Fe₂Ti)(PO₄)₄[O(OH)](H₂O)₁₀·4H₂O | — | — |
| Madeiraite | — | — | — |
| Magnanelliite | — | — | — |
| Magnesio-arfvedsonite | NaNa₂(Mg₄Fe³⁺)Si₈O₂₂(OH)₂ | — | — |
| Magnesio-ferri-fluoro-hornblende | ☐Ca₂(Mg₄Fe³⁺)(Si₇Al)O₂₂F₂ | — | — |
| Magnesio-ferri-hornblende | ☐Ca₂(Mg₄Fe³⁺)[(Si₇Al)O₂₂](OH)₂ | — | — |
| Magnesio-fluoro-arfvedsonite | NaNa₂(Mg₄Fe³⁺)Si₈O₂₂F₂ | 5.5 | — |
| Magnesio-fluoro-hastingsite | NaCa₂(Mg₄Fe³⁺)(Si₆Al₂)O₂₂F₂ | — | — |
| Magnesio-fluoro-riebeckite | ◻Na₂(Mg₃Fe³⁺₂)(Si₈O₂₂)F₂ | — | — |
| Magnesio-hastingsite | NaCa₂(Mg₄Fe³⁺)(Si₆Al₂)O₂₂(OH)₂ | — | — |
| Magnesio-hornblende | ☐Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂ | 5.5 | — |
| Magnesio-riebeckite | ☐Na₂(Mg₃Fe³⁺₂)Si₈O₂₂(OH)₂ | 6.0 | — |
| Magnesioalterite | Mg₂Fe³⁺₄(SO₄)₄(C₂O₄)₂(OH)₄·17H₂O | — | — |
| Magnesiobermanite | MgMn³⁺₂(PO₄)₂(OH)₂*₄H₂O | — | — |
| Magnesiocanutite | NaMnMg₂[AsO₄]₂[AsO₂(OH)₂] | — | — |
| Magnesiochloritoid | MgAl₂O(SiO₄)(OH)₂ | — | — |
| Magnesiochlorophoenicite | (Mg,Mn)₃Zn₂(AsO₄)(OH,O)₆ | — | — |
| Magnesiohatertite | (Na,Ca)₂Ca(Mg,Fe³⁺)₂(AsO₄)₃ | — | — |
| Magnesiohulsite | Mg₂Fe³⁺O₂(BO₃) | — | — |
| Magnesioleydetite | Mg(UO₂)(SO₄)₂·11H₂O | — | — |
| Magnesioneptunite | KNa₂Li(Mg,Fe)₂Ti₂Si₈O₂₄ | — | — |
| Magnesiopascoite | Ca₂Mg(V₁₀O₂₈)·16H₂O | 2.5 | — |
| Magnesioqingheiite | Na₂Mg(MgAl)(PO₄)₃ | — | — |
| Magnesiozippeite | Mg(UO₂)₂(SO₄)O₂ * 3.₅H₂O | — | — |
| Majzlanite | K₂Na(ZnNa)Ca(SO₄)₄ | — | — |
| Makovickyite | Cu₁.₁₂Ag₀.₈₁Pb₀.₂₇Bi₅.₃₅S₉ | — | — |
| Malachite | Cu₂(CO₃)(OH)₂ | 3.8 | 3.85 g/cm³ |
| Malayaite | CaSn(SiO₄)O | — | — |
| Malhmoodite | FeZr(PO₄)₂ * 4H₂O | 3.0 | — |
| Mallardite | Mn²⁺SO₄·7H₂O | 2.0 | — |
| Mammothite | Pb₆Cu₄AlSb₅+O₂(OH)₁₆Cl₄(SO₄)₂ | — | — |
| Mandarinoite | Fe³⁺₂(Se⁴⁺O₃)₃·6H₂O | 2.5 | — |
| Manganflurlite | ZnMn²⁺₃Fe³⁺(PO₄)₃(OH)₂(H₂O)₇*₂H₂O | — | — |
| Mangani-dellaventuraite | NaNa₂(MgMn³⁺₂Ti⁴⁺Li)Si₈O₂₂O₂ | — | — |
| Mangani-eckermannite | NaNa₂(Mg₄Mn³⁺)Si₈O₂₂(OH)₂ | — | — |
| Mangani-obertiite | NaNa₂(Mg₃Mn³⁺Ti⁴⁺)Si₈O₂₂O₂ | — | — |
| Mangani-pargasite | NaCa₂(Mg₄Mn³⁺)(Si₆Al₂)O₂₂(OH)₂ | — | — |
| Manganiakasakaite-(La) | {CaLa}{Mn³⁺AlMn²⁺}(Si₂O₇)(SiO₄)O(OH) | — | — |
| Manganiandrosite-(Ce) | MnCe(Mn³⁺AlMn²⁺)[Si₂O₇][SiO₄]O(OH) | — | — |
| Manganiandrosite-(La) | {Mn²⁺La}{Mn³⁺AlMn²⁺}(Si₂O₇)(SiO₄)O(OH) | — | — |
| Manganiceladonite | KMgMn³⁺Si₄O₁₀(OH)₂ | — | — |
| Manganilvaite | CaFe²⁺Fe³⁺Mn²⁺(Si₂O₇)O(OH) | — | — |
| Manganite | Mn³⁺O(OH) | 4.0 | — |
| Mangano-ferri-eckermannite | NaNa₂(Mn²⁺₄Fe³⁺)Si₈O₂₂(OH)₂ | 5.0 | — |
| Mangano-mangani-ungarettiite | NaNa₂(Mn²⁺₂Mn³⁺₃)(Si₈O₂₂)O₂ | — | — |
| Manganobadalovite | NaNaMn(MgFe³⁺)(AsO₄)₃ | — | — |
| Manganoblödite | Na₂Mn(SO₄)₂·4H₂O | — | — |
| Manganohatertite | NaNaCa(MnFe³⁺)(AsO₄)₃ | — | — |
| Manganonaujakasite | Na₆(Mn²⁺,Fe²⁺)Al₄Si₈O₂₆ | — | — |
| Manganoneptunite | Na₂KLiMn²⁺₂Ti₂Si₈O₂₄ | — | — |
| Manganrockbridgeite | Mn²⁺₂Fe³⁺₃(PO₄)₃(OH)₄(H₂O) | — | — |
| Manitobaite | Na₁₆Mn²⁺₂₅Al₈(PO₄)₃₀ | — | — |
| Manuelarossiite | PbCaAlF₇ | — | — |
| Maoniupingite-(Ce) | (Ce,Ca)₄(Fe³⁺,Ti,Fe²⁺,☐)(Ti,Fe³⁺,Fe²⁺,Nb)₄Si₄O₂₂ | — | — |
| Mapimite | Zn₂Fe³⁺₃(AsO₄)₃(OH)₄·10H₂O | — | — |
| Margaritasite | Cs₂(UO₂)₂(VO₄)₂·H₂O | — | — |
| Margarite | CaAl₂(Si₂Al₂)O₁₀(OH)₂ | — | — |
| Marinaite | Cu₂Fe³⁺O₂(BO₃) | — | — |
| Marioantofilliite | [Cu₄Al₂(OH)₁₂](CO₃)·3H₂O | — | — |
| Markascherite | Cu₃(MoO₄)(OH)₄ | — | — |
| Markcooperite | Pb₂(UO₂)TeO₆ | — | 8.09 g/cm³ |
| Marklite | Cu₅(CO₃)₂(OH)₆ * 6H₂O | — | — |
| Markwelchite | TlPbSbS₃ | — | — |
| Marrite | AgPbAsS₃ | — | 5.49 g/cm³ |
| Marrucciite | Hg₃Pb₁₆Sb₁₈S₄₆ | — | — |
| Marsaalamite-(Y) | Y(MoO₄)(OH) | — | — |