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Monoclinic crystal system
1,774 minerals
| Mineral | Chemical formula | Mohs hardness | Density |
|---|---|---|---|
| Piemontite-(Pb) | CaPbAl₂Mn³⁺[Si₂O₇][SiO₄]O(OH) | — | — |
| Piemontite-(Sr) | {CaSr}{Al₂Mn³⁺}(Si₂O₇)(SiO₄)O(OH) | — | — |
| Pigeonite | (Mg,Fe,Ca)SiO₃ | 6.0 | — |
| Pilanesbergite | Na₂Ca₂Fe₂Ti₂(Si₂O₇)₂O₂F₂ | — | — |
| Pilawite-(Y) | Ca₂Y₂Al₄(SiO₄)₄O₂(OH)₂ | — | — |
| Pillaite | Pb₉Sb₁₀S₂₃ClO₀.₅ | — | — |
| Pinakiolite | (Mg,Mn)₂(Mn³⁺,Sb⁵⁺)O₂(BO₃) | 6.0 | — |
| Plagionite | Pb₅Sb₈S₁₇ | 2.5 | — |
| Plavnoite | K₀.₈Mn₀.₆[(UO₂)₂O₂(SO₄)]·3.5H₂O | — | — |
| Playfairite | Pb₁₆(Sb,As)₁₉S₄₄Cl | 3.5 | — |
| Plumbojohntomaite | PbFe²⁺₂Fe³⁺₂(PO₄)₃(OH)₃ | — | — |
| Plumboperloffite | PbMn²⁺₂Fe³⁺₂(PO₄)₃(OH)₃ | — | — |
| Plumbotellurite | Pb(TeO₃) | — | 7.23 g/cm³ |
| Plášilite | Na(UO₂)(SO₄)(OH)·2H₂O | — | — |
| Pokrovskite | Mg₂(CO₃)(OH)₂ | — | — |
| Polloneite | AgPb₄₆As₂₆Sb₂₃S₁₂₀ | — | — |
| Polyakovite-(Ce) | (Ce,Ca)₄(Mg,Fe²⁺)(Cr³⁺,Fe³⁺)₂(Ti,Nb)₂(Si₂O₇)₂O₈ | — | — |
| Polyarsite | Na₇CaMgCu₂(AsO₄)₄F₂Cl | — | — |
| Polybasite | [Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇] | — | — |
| Polylithionite | KLi₂AlSi₄O₁₀F₂ | — | — |
| Ponomarevite | K₄Cu₄Cl₁₀O | — | — |
| Poppiite | Ca₂V³⁺V³⁺₂(Si₂O₇)(SiO₄)(OH,O)₂·H₂O | — | — |
| Posnjakite | Cu₄SO₄(OH)₆·H₂O | — | — |
| Potassic-arfvedsonite | KNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂ | — | — |
| Potassic-chloro-hastingsite | KCa₂(Fe²⁺₄Fe³⁺)(Si₆Al₂)O₂₂Cl₂ | 5.0 | — |
| Potassic-chloro-pargasite | KCa₂(Mg₄Al)(Si₆Al₂)O₂₂Cl₂ | — | — |
| Potassic-ferri-leakeite | KNa₂(Mg₂Fe³⁺₂Li)Si₈O₂₂(OH)₂ | 5.0 | — |
| Potassic-ferro-ferri-sadanagaite | KCa₂Fe²⁺₃Fe³⁺₂(Si₅Al₃)O₂₂(OH)₂ | 5.8 | — |
| Potassic-ferro-ferri-taramite | K(NaCa)(Fe²⁺₃Fe³⁺₂)(Si₆Al₂)O₂₂(OH)₂ | — | — |
| Potassic-ferro-pargasite | KCa₂(Fe²⁺₄Al)(Si₆Al₂)O₂₂(OH)₂ | 6.0 | — |
| Potassic-ferro-sadanagaite | KCa₂(Fe²⁺₃Al₂)(Si₅Al₃)O₂₂(OH)₂ | 6.0 | — |
| Potassic-ferro-taramite | K(NaCa)(Fe²⁺₃Al₂)(Si₆Al₂)O₂₂(OH)₂ | — | — |
| Potassic-fluoro-hastingsite | KCa₂(Fe²⁺₄Fe³⁺)(Si₆Al₂)O₂₂F₂ | 6.0 | — |
| Potassic-fluoro-pargasite | KCa₂(Mg₄Al)(Si₆Al₂)O₂₂F₂ | — | — |
| Potassic-fluoro-richterite | K(NaCa)Mg₅Si₈O₂₂F₂ | — | — |
| Potassic-hastingsite | — | — | — |
| Potassic-jeanlouisite | K(NaCa)(Mg₄Ti)Si₈O₂₂O₂ | — | — |
| Potassic-magnesio-arfvedsonite | [K][Na₂][Mg₄Fe³⁺]Si₈O₂₂(OH)₂ | — | — |
| Potassic-magnesio-fluoro-arfvedsonite | KNa₂(Mg₄Fe³⁺)Si₈O₂₂F₂ | 6.0 | — |
| Potassic-magnesio-hastingsite | KCa₂(Mg₄Fe³⁺)(Si₆Al₂)O₂₂(OH)₂ | — | — |
| Potassic-mangani-leakeite | KNa₂(Mg₂Mn³⁺₂Li)Si₈O₂₂(OH)₂ | — | — |
| Potassic-pargasite | KCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂ | — | — |
| Potassic-richterite | {K}{CaNa}{Mg₅}Si₈O₂₂(OH)₂ | — | — |
| Potassic-sadanagaite | KCa₂(Mg₃Al₂)(Si₅Al₃)O₂₂(OH)₂ | 6.0 | — |
| Poyarkovite | Hg₃OCl | — | — |
| Priceite | Ca₂B₅O₇(OH)₅·H₂O | — | — |
| Probertite | NaCaB₅O₇(OH)₄·3H₂O | — | — |
| Prosopite | CaAl₂(F,OH)₈ | 4.5 | — |
| Proto-owyheeite | Ag₉Pb₄₀Sb₄₅S₁₁₂ | — | — |
| Pseudolyonsite | Cu₃(VO₄)₂ | — | — |
| Pseudomalachite | Cu₅(PO₄)₂(OH)₄ | — | — |
| Pseudomarkeyite | Ca₈(UO₂)₄(CO₃)₁₂(H₂O)₁₈·3H₂O | — | — |
| Pseudomeisserite-(NH4) | — | — | — |
| Pseudosinhalite | Mg₂Al₃(BO₃)₂(OH)O₃ | — | — |
| Pseudowollastonite | CaSiO₃ | — | 2.90 g/cm³ |
| Pumpellyite-(Al) | Ca₂Al₃(Si₂O₇)(SiO₄)(OH,O)₂·H₂O | — | — |
| Pumpellyite-(Fe²⁺) | — | — | — |
| Pumpellyite-(Fe³⁺) | Ca₂Fe³⁺Al₂(Si₂O₇)(SiO₄)(OH,O)₂·H₂O | — | — |
| Pumpellyite-(Mg) | Ca₂MgAl₂(Si₂O₇)(SiO₄)(OH)₂ * H₂O | — | — |
| Pumpellyite-(Mn²⁺) | — | — | — |
| Puninite | Na₂Cu₃O(SO₄)₃ | — | — |
| Punkaruaivite | Li{Ti₂(OH)₂[Si₄O₁₁(OH)]}·H₂O | — | — |
| Puschridgeite | Mn(C₂H₃O₃)₂(H₂O)₂ | — | — |
| Puttapaite | — | — | — |
| Pyradoketosite | Ag₃SbS₃ | — | 5.80 g/cm³ |
| Pyrostilpnite | Ag₃SbS₃ | — | 5.80 g/cm³ |
| Pääkkönenite | — | 2.0 | — |
| Qatranaite | CaZn₂(OH)₆(H₂O)₂ | — | — |
| Qilianshanite | NaH₄(CO₃)BO₃)·2H₂O | — | — |
| Qingheiite | NaNaMn(MgAl)(PO₄)₃ | — | — |
| Quatrandorite | AgPbSb₃S₆ | — | — |
| Queitite | Zn₂Pb₄(Si₂O₇)(SiO₄)(SO₄) | 4.0 | 5.85 g/cm³ |
| Quenselite | PbMn³⁺O₂(OH) | 2.5 | — |
| Raadeite | Mg₇(PO₄)₂(OH)₈ | — | 2.71 g/cm³ |
| Rabbittite | Ca₃Mg₃(UO₂)₂(CO₃)₆(OH)₄·18H₂O | 2.5 | — |
| Radekškodaite-(Ce) | — | — | — |
| Radekškodaite-(La) | — | — | — |
| Radvaniceite | GeS₂ | — | — |
| Raisaite | CuMg[Te⁶⁺O₄(OH)₂]·6H₂O | — | — |
| Rajite | Cu(Te₄+₂O₅) | — | — |