- Home
- Crystal systems
- Monoclinic
Monoclinic crystal system
1,774 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Argentobaumhauerite | Ag₁.₅Pb₂₂As₃₃.₅S₇₂ | 3.0 | — |
| Argentopyrite | AgFe₂S₃ | — | — |
| Aristarainite | Na₂MgB₁₂O₂₀ * 8H₂O | — | — |
| Armbrusterite | K₅Na₇Mn₁₅[(Si₉O₂₂)₄](OH)₁₀ * 4H₂O | 3.5 | — |
| Armstrongite | CaZr(Si₆O₁₅)·2H₂O | — | — |
| Arrojadite-(BaNa) | BaNa₃(NaCa)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH) | — | — |
| Arrojadite-(KFe) | {KNa}{Fe²⁺☐}{Ca}{Na₂☐}{Fe²⁺₁₃}{Al}(PO₄)₁₁(HPO₄)(OH)₂ | — | — |
| Arrojadite-(KNa) | KNa₃(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂ | — | — |
| Arrojadite-(PbFe) | PbFe²⁺(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂ | — | — |
| Arrojadite-(SrFe) | SrFe²⁺(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂ | — | — |
| Arsenatrotitanite | NaTi(AsO₄)O | — | 3.72 g/cm³ |
| Arsenbrackebuschite | Pb₂Fe³⁺(AsO₄)₂(OH) | — | — |
| Arseniopleite | (Ca,Na)NaMn²⁺(Mn²⁺,Mg,Fe²⁺)₂(AsO₄)₃ | — | — |
| Arseniosiderite | Ca₂Fe³⁺₃O₂(AsO₄)₃(H₂O)₂·H₂O | 4.5 | — |
| Arsenmedaite | Mn²⁺₆ As₅+Si₅O₁₈(OH) | — | — |
| Arsenopyrite | FeAsS | — | 6.35 g/cm³ |
| Arsenowagnerite | Mg₂(AsO₄)F | — | — |
| Arsenquatrandorite | Ag₁₇.₆Pb₁₂.₈Sb₃₈.₁As₁₁.₅S₉₆ | — | — |
| Arsentsumebite | — | — | — |
| Arsmirandite | Na₁₈Cu₁₂Fe³⁺O₈(AsO₄)₈Cl₅ | — | — |
| Arthurite | CuFe³⁺₂(AsO₄)₂(OH)₂ * 4H₂O | — | — |
| Artinite | Mg₂CO₃(OH)₂·3H₂O | 2.5 | — |
| Artsmithite | (Hg+₂)₂Al(PO₄)₁.₇₄(OH)₁.₇₈ | — | — |
| Arzakite | Hg₃S₂Br₂ | — | 6.74 g/cm³ |
| Aschamalmite | Pb₆₋₃ₓBi₂₊ₓS₉ | — | — |
| Aspidolite | NaMg₃(AlSi₃O₁₀)(OH)₂ | — | — |
| Atelestite | Bi₂(AsO₄)O(OH) | — | — |
| Attakolite | (Ca,Sr)Mn(Al,Fe)₄(HPO₄,PO₄)₃(SiO₄,PO₄)(OH)₄ | — | — |
| Augelite | Al₂PO₄(OH)₃ | — | — |
| Augite | (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)₂O | — | — |
| Aurichalcite | (Zn,Cu²⁺)₅(CO₃)₂(OH)₆ | 2.0 | — |
| Aurivilliusite | Hg⁺Hg²⁺OI | — | — |
| Auroselenide | AuSe | — | 9.17 g/cm³ |
| Avdoninite | K₂Cu₅Cl₈(OH)₄·H₂O | — | — |
| Azurite | Cu₃(CO₃)₂(OH)₂ | 3.8 | 3.75 g/cm³ |
| Babánekite | Cu₃(AsO₄)₂·8H₂O | — | — |
| Badalovite | NaNaMg(MgFe³⁺)(AsO₄)₃ | — | — |
| Baddeleyite | ZrO₂ | 6.5 | 5.78 g/cm³ |
| Bafertisite | Ba₂(Fe²⁺)₄Ti₂(Si₂O₇)₂O₂(OH)₂F₂ | — | — |
| Baghdadite | Ca₃(Zr,Ti)(Si₂O₇)O₂ | — | — |
| Bahianite | Al₅Sb⁵⁺₃O₁₄(OH)₂ | 9.0 | — |
| Baiamareite | Ag₄Pb₁₂Fe₄Sb₂₀S₄₈ | — | — |
| Bairdite | Pb₂Cu²⁺₄Te⁶⁺₂O₁₀(OH)₂(SO₄)·H₂O | — | — |
| Bakhchisaraitsevite | — | — | — |
| Balestraite | KLi₂V⁵⁺Si₄O₁₂ | — | — |
| Bannermanite | — | — | — |
| Barahonaite-(Al) | (Ca,Cu,Na,Fe³⁺,Al)₁₂Al₂(AsO₄)₈(OH,Cl)x * nH₂O | — | — |
| Barahonaite-(Fe) | (Ca,Cu,Na,Fe³⁺,Al)₁₂Fe³⁺₂(AsO₄)₈(OH,Cl)x * nH₂O | — | — |
| Baratovite | KCa₇(Ti,Zr)₂Li₃Si₁₂O₃₆F₂ | — | — |
| Bariandite | Al₀.₆(V₅+,V₄+)₈O₂₀ * 9H₂O | — | — |
| Barikaite | Ag₃Pb₁₀(Sb₈As₁₁)Σ₁₉S₄₀ | — | — |
| Barnesite | (Na,Ca)V₆O₁₆ * 3H₂O | 3.0 | — |
| Barroisite | ☐NaCa[Mg₃Al₂](Si₇Al)O₂₂(OH)₂ | 5.5 | — |
| Barronite | — | — | — |
| Barrydawsonite-(Y) | Na₁.₅Y₀.₅CaSi₃O₉H | — | — |
| Bartelkeite | PbFeGe(Ge₂O₇)(OH)₂·H₂O | 4.0 | — |
| Barytocalcite | BaCa(CO₃)₂ | — | — |
| Barytolamprophyllite | (BaK)Ti₂Na₃Ti(Si₂O₇)₂O₂(OH)₂ | — | — |
| Bassanite | CaSO₄·0.5H₂O | — | — |
| Bassetite | Fe²⁺(UO₂)₂(PO₄)₂ * 10H₂O | 2.5 | — |
| Bassoite | SrV⁴⁺₃O₇·4H₂O | — | — |
| Batagayite | CaZn₂(Zn,Cu)₆(PO₄)₄[PO₃(OH)]₃*₁₂H₂O | — | — |
| Baumhauerite II | Pb₃As₄S₉ | — | — |
| Baumoite | BaU₃Mo₂O₁₆(H₂O)₆ | — | — |
| Bayerite | Al(OH)₃ | — | — |
| Bayldonite | Cu₃PbO(AsO₃OH)₂(OH)₂ | 4.5 | — |
| Bayleyite | Mg₂(UO₂)(CO₃)₃ * 18H₂O | — | — |
| Baylissite | K₂Mg(CO₃)₂·4H₂O | — | — |
| Bazhenovite | — | — | — |
| Bearsite | Be₂(AsO₄)(OH) * 4H₂O | — | — |
| Bearthite | Ca₂Al(PO₄)₂(OH) | — | — |
| Belloite | Cu(OH)Cl | — | — |
| Belousovite | KZn(SO₄)Cl | — | — |
| Bementite | Mn₇Si₆O₁₅(OH)₈ | 6.0 | — |
| Benavidesite | Pb₄MnSb₆S₁₄ | — | — |
| Bendadaite | Fe²⁺Fe³⁺₂(AsO₄)₂(OH)₂·4H₂O | — | — |
| Benjaminite | Ag₃Bi₇S₁₂ | — | — |
| Beraunite | Fe³⁺₆(PO₄)₄O(OH)₄(H₂O)₄·2H₂O | — | — |
| Berdesinskiite | — | — | — |
| Bergenite | Ca₂Ba₄(UO₂)₉O₆(PO₄)₆·16H₂O | — | — |