Encyclopedia - Monoclinic

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MINERALS OF MONOCLINIC SYSTEM

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Acanthite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : Ag₂S
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Actinolite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
Rarity : Very common

Size : µm / mm / cm / dm / m

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Adularia

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : KAlSi₃O₈
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Aegyrine

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : NaFeSi₂O₆
Rarity : Common

Size : µm / mm / cm / dm / m

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Afwillite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Ca₃(SiO₃OH)₂ 2H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Agrinierite

Class : Oxides and hydroxides
Subclass : Uranyl hydroxides
Crystal system : Monoclinic
Chemistry : (K₂,Ca,Sr)U₃O₁₀ 4H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Allanite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : (Ce,Ca)₂(Al,Fe)₃(SiO₄)₃(OH)
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Alloclasite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : (CoFe)AsS
Rarity : Rare

Size : µm / mm / cm / dm / m

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Aluminite

Class : Sulphates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : Al2(SO4)(OH)4 7H2O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Amphibole

Class : Silicates
Subclass : Inosilicates
Crystal system : Orthorhombic or monoclinic
Chemistry : WX₂Y₅Si₈O₂₂(OH)₂
Rarity : Very common

Size : µm / mm / cm / dm / m

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Annabergite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated Arsenates
Crystal system : Monoclinic
Chemistry : Ni₃(AsO₄)₂ 8H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Apachite

Class : Silicates
Subclass : Cyclosilicates
Crystal system : Monoclinic
Chemistry : Cu₉Si₁₀O₂₉ 11H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Arfvedsonite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Na₃Fe₅Si₈O₂₂(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Arrojadite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : KNa₄CaFe₁₀Mn₄Al(PO₄)₁₂(OH)₂
Rarity : Uncommon to rare

Size : µm / mm / cm / dm / m

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Arseniosiderite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Ca₂Fe₃O₂(AsO₄)₃ 3H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Arsenopyrite

Class : Sulfides and sulphosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : FeAsS
Rarity : Very common

Size : µm / mm / cm / dm / m

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Arsentsumebite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous arsenates
Crystal system : Monoclinic
Chemistry : Pb₂Cu(AsO₄)(SO₄)(OH)
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Arthurite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : CuFe₂(AsO₄)₂(OH)₂ 4H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Artinite

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : Mg₂CO₃(OH)₂ 3H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Augelite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : Al₂(PO₄)(OH)₃
Rarity : Fairly rare

Size : µm / mm / cm / dm / m

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Augite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : (Ca,Mg,Fe)₂(Si,Al)₂O₆
Rarity : Very common

Size : µm / mm / cm / dm / m

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Aurichalcite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Monoclinic
Chemistry : (Zn,Cu)₅(CO₃)₂(OH)₆
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Azurite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Monoclinic
Chemistry : Cu₂(CO₃)₂(OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Baddeleyite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : ZrO₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Barbosalite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : Fe₃(PO₄)₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Barytocalcite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Monoclinic
Chemistry : BaCa(CO₃)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Bayldonite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Cu₃Pb(AsO₄)₂(OH)₂
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Beidellite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (Ca_0.5,Na)_0.3Al₂(Si,Al)₄O₁₀(OH)₂ nH₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Beraunite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Fe₆(PO₄)₄(OH)₅ 6H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Bermanite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Mn₃(PO₄)₂(OH)₂ 4H₂O
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Berthierine

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (Fe,Al)₃(Si,Al)₂O₅(OH)₄
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Beryllonite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : NaBePO₄
Rarity : Rare

Size : µm / mm / cm / dm / m

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Bieberite

Class : Sulphates, chromates, molybdates
Subclass : Anhydrous sulphates
Crystal system : Monoclinic
Chemistry : CoSO₄ 7H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Bikitaite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : LiAlSi₂O₆ H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Biotite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Triclinic
Chemistry : K(Mg,Fe)₃AlSi₃O₁₀(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Bismite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : Bi₂O₃
Rarity : Rare

Size : µm / mm / cm / dm / m

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Boltwoodite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : (H₃O)K(UO₂)SiO₄
Rarity : Rare

Size : µm / mm / cm / dm / m

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Borax

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Monoclinic
Chemistry : Na₂B₄O₅(OH)₄ 8H₂O
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Botallackite

Class : Halides
Subclass : Oxychlorides
Crystal system : Monoclinic
Chemistry : Cu₂Cl(OH)₃
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Botryogen

Class : Sulphates, chromates, molybdates
Subclass : Hydrated sulphates
Crystal system : Monoclinic
Chemistry : MgFe(SO₄)₂OH 7H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Boulangerite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₅Sb₄S₁₁
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Brackebuschite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated vanadates
Crystal system : Monoclinic
Chemistry : Pb₂(Mn,Fe)(VO₄)₂(OH)
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Brandtite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Ca₂(Mn,Mg)(As₂O₄)₂ 2H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Brannerite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : (U,Ca,Y,Ce)(Ti,Fe)₂O₆
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Brazilianite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphate
Crystal system : Monoclinic
Chemistry : NaAl₃(PO₄)₂(OH)₄
Rarity : Rare

Size : µm / mm / cm / dm / m

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Brewsterite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : (Sr,Ba,Ca)Al₂Si₆O₁₆ 5H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Brochantite

Class : Sulphates, chromates, molybdates
Subclass : Anhydrous sulphates
Crystal system : Monoclinic
Chemistry : Cu₄SO₄(OH)₆
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Byssolite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Cabrerite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Ni₃(AsO₄)₂ 8H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Calaverite

Class : Sulfides and sulfosalts
Subclass : Tellurides
Crystal system : Monoclinic
Chemistry : AuTe₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Calcurmolite

Class : Sulfates, chromates, molybdates
Subclass : Uranyl molybdates
Crystal system : Monoclinic
Chemistry : Ca(UO₂)₃(MoO₄)₃(OH)₂ 11H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Canavesite

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Monoclinic
Chemistry : Mg₂(CO₃)(HBO₃) 5H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Carnotite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl vanadates
Crystal system : Monoclinic
Chemistry : K₂(UO₂)₂(VO₄)₂ 3H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Catapleiite

Class : Silicates
Subclass : Cyclosilicates
Crystal system : Monoclinic
Chemistry : Na₂ZrSi₃O₉ 2H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Celadonite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : K(Mg,Fe)₂Si₄O₁₀(OH)₂
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Celsian

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : BaAl₂Si₂O₈
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Chalcoalumite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : CuAl₄SO₄(OH)₁₂ 3H₂O
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

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Chalcocite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : Cu₂S
Rarity : Common

Size : µm / mm / cm / dm / m

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Chamosite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (Fe,Mg)₅Al(Si₃Al)O₁₀ (OH,O)₈
Rarity : Common

Size : µm / mm / cm / dm / m

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Charoite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : K₅Ca₈(Si₆O₁₅)₂(Si₂O₇)Si₄O₉(OH) 3(H₂O)
Rarity : Rare

Size : µm / mm / cm / dm / m

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Chenevixite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Cu₂Fe₂(AsO₄)₂(OH)₄ H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Chervetite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous vanadates
Crystal system : Monoclinic
Chemistry : Pb₂V₂O₇
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Chlorite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : A_5-6Si₄O₁₀(OH)₈
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Chloritoid

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Fe₂Al₄Si₂O₁₀(OH)₄
Rarity : Rare

Size : µm / mm / cm / dm / m

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Chondrodite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Mg₅(SiO₄)₂ (F,OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Clinochlore

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Mg₅Al(Si₃Al)O₁₀(OH)₈
Rarity : Very common

Size : µm / mm / cm / dm / m

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Clinoclase

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous arsenates
Crystal system : Monoclinic
Chemistry : Cu₃(AsO₄)(OH)₃
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Clinoenstatite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : MgSiO₃
Rarity : Rare

Size : µm / mm / cm / dm / m

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Clinoferrosilite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : FeSiO₃
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Clinohumite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Mg₉(SiO₄)₄(F,OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Clinoptilolite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : (Ca,K,Na)₃Al₃Si₁₅O₃₆ 11.5H₂O
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

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Clinozoisite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Ca₂Al₃(SiO₄)₃(OH)
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Clintonite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : CaMg₂Al₄SiO₁₀(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Coesite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : SiO₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Colemanite

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Monoclinic
Chemistry : Ca₂B₆O₁₁ H₂O
Rarity : Fairly rare

Size : µm / mm / cm / dm / m

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Cornwallite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous arsenates
Crystal system : Monoclinic
Chemistry : Cu₅(AsO₄)₂(OH)₄
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Coronadite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : PbMn₈O₁₆
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Creedite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : CaAl₂(SO₄)(F,OH)₁₀ 2H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Crocidolite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Na₂Fe₅Si₈O₂₂(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Crocoite

Class : Sulphates, chromates, molybdates
Subclass : Chromates
Crystal system : Monoclinic
Chemistry : PbCrO₄
Rarity : Rare

Size : µm / mm / cm / dm / m

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Crossite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Na₂(Mg,Fe)₃(Al,Fe)₂Si₈O₂₂(OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Cryolite

Class : Halides
Subclass : Fluorides
Crystal system : Monoclinic
Chemistry : Na₃AlF₆
Rarity : Rare

Size : µm / mm / cm / dm / m

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Cryptomelane

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : KMn₈O₁₆
Rarity : Rare

Size : µm / mm / cm / dm / m

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Cummingtonite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : (Mg,Fe)₇Si₈O₂₂(OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Dachiardite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : Na₄Al₄Si₂₀O₄₈ 13H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Dannemorite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Mn₂(Fe,Mg)₅Si₈O₂₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Datolite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : CaBSiO₄(OH)
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Devilline

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : CaCu₄(SO₄)₂(OH)₆ 3H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Diaphorite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Ag₃Pb₂Sb₃S₈
Rarity : Rare

Size : µm / mm / cm / dm / m

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Dickite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Al₂Si₂O₅(OH)₄
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Diopside

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : CaMgSi₂O₆
Rarity : Common

Size : µm / mm / cm / dm / m

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Djurleite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : Cu₃₁S₁₆
Rarity : Rare

Size : µm / mm / cm / dm / m

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Dufrenite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Ca_0,5Fe₆(PO₄)₄(OH)₆ 2H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Dufrenoysite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₂As₂S₅
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Dumontite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl phosphates
Crystal system : Monoclinic
Chemistry : Pb₂(UO₂)₃O₂(PO₄)₂ 5H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Durangite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous arsenates
Crystal system : Monoclinic
Chemistry : NaAl(AsO₄)F
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Dypingite

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : Mg₅(CO₃)₄(OH)₂ 5H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Eakerite

Class : Silicates
Subclass : Cyclosilicates
Crystal system : Monoclinic
Chemistry : Ca₂SnAl₂Si₆O₁₈(OH)₂ 2H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Eckermannite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Na₃Mg₄AlSi₈O₂₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Edenite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Elyite

Class : Sulfates, chromates, molybdates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : Pb₄Cu(SO₄)(OH)₈
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Eosphorite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : MnAl(PO₄)(OH)₂ H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Epidote

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Ca₂FeAl₂(SiO₄)₃(OH)
Rarity : Very common

Size : µm / mm / cm / dm / m

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Epistilbite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : CaAl₂Si₆O₁₆ 5H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Erythrite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Co₃(AsO₄)₂ 8H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Esseneite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : CaFeAlSiO₆
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Euclase

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : BeAlSiO₄(OH)
Rarity : Rare

Size : µm / mm / cm / dm / m

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Eudidymite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : NaBeSi₃O₇(OH)
Rarity : Rare

Size : µm / mm / cm / dm / m

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Fiedlerite

Class : Halides
Subclass : Oxychlorides
Crystal system : Monoclinic
Chemistry : Pb₃Cl₄F(OH) H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Fizelyite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₁₄Ag₅Sb₂₁S₄₈
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Fornacite

Class : Sulfates, chromates, molybdates
Subclass : Chromates
Crystal system : Monoclinic
Chemistry : Pb₂Cu(AsO₄)(CrO₄)(OH)
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Freieslebenite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : AgPbSbS₃
Rarity : Rare

Size : µm / mm / cm / dm / m

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Friedelite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Mn₈Si₆O₁₅(OH,Cl)₁₀
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Fuchsite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : KAl₂(Si₃Al)O₁₀(OH,F)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Gadolinite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Y₂FeBe₂Si₂O₁₀
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Gaylussite

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : Na₂Ca(CO₃)₂ 5H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Geocronite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₁₄(Sb,As)₆S₂₃
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Gibbsite

Class : Oxides and hydroxides
Subclass : Hydroxides and hydrates
Crystal system : Monoclinic
Chemistry : Al(OH)₃
Rarity : Common

Size : µm / mm / cm / dm / m

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Gismondite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : Ca₂Al₄Si₄O₁₆ 9H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Glauberite

Class : Sulfates, chromates, molybdates
Subclass : Anhydrous sulfates
Crystal system : Monoclinic
Chemistry : Na₂Ca(SO₄)₂
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Glauconite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (K,Na)(Fe,Al,Mg)₂(Si,Al)₄O₁₀(OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Glaucophane

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Na₂Mg₃Al₂Si₈O₂₂(OH)₂
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Gorceixite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : BaAl₃(PO₄)(PO₃OH)(OH)₆
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Graftonite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : (Fe,Mn,Ca)₃(PO₄)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Greenalite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Fe_2-3Si₂O₅(OH)₄
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Grunerite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Fe₇Si₈O₂₂(OH)₂
Rarity : Quite common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Gudmundite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : FeSbS
Rarity : Rare

Size : µm / mm / cm / dm / m

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Gypsum

Class : Sulphates, chromates, molybdates
Subclass : Hydrated sulphates
Crystal system : Monoclinic
Chemistry : CaSO₄ 2H₂O
Rarity : Very common

Size : µm / mm / cm / dm / m

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Hagendorfite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : NaCaMn(Fe,Mg)₂(PO₄)₃
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Halloysite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Al₂Si₂O₅(OH)₄
Rarity : Very common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Halotrichite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : FeAl₂(SO₄)₄ 22H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Harmotome

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : BaAl₂Si₆O₁₆ 6H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Hastingsite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : NaCa₂Fe₅(Si₆Al₂)O₂₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Hedenbergite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Na₂Fe₅TiSi₆O₂₀
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Hellandite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : (Ca,Y)₆(Al,Fe)B₄Si₄O₂₀(OH)₄
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Herderite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : CaBe(PO₄)F
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Hessite

Class : Sulfides and sulfosalts
Subclass : Tellurides
Crystal system : Monoclinic
Chemistry : Ag₂Te
Rarity : Rare

Size : µm / mm / cm / dm / m

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Heteromorphite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₇Sb₈S₁₉
Rarity : Very Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Heulandite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : (Ca,Na₂)Al₂Si₇O₁₈ 6H₂O
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Hexahydrite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : MgSO₄ 6H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Hingganite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : (Y,Yb)BeSiO4(OH)₀
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Hollandite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : BaMn₈O₁₆
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Hornblende

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : (Ca,Na)₂(Fe²⁺,Mg²⁺,Fe³⁺,Al³⁺)₅(Si₇Al)O₂₂ (OH,F)₂
Rarity : Very common

Size : µm / mm / cm / dm / m

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Hörnesite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Mg₃(AsO₄)₂ 8H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Huréaulite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Mn₅(PO₄)₂(PO₃OH)₂ 4H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Hyalophane

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : (K,Ba)Al(Al,Si)₃O₈
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Hydroboracite

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Monoclinic
Chemistry : CaMgB₆O₈(OH)₆ 3H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Hydromagnesite

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : Mg₅(CO₃)₄(OH)₂ 4H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Hydrozincite

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : Zn₅(CO₃)₂(OH)₆
Rarity : Quite common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Illite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (K,H₃O)Al₂(Si₃Al)O₁₀(H₂O,OH)₂
Rarity : Very common

Size : µm / mm / cm / dm / m

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Imiterite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : Ag₂HgS₂
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Inyoite

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Monoclinic
Chemistry : CaB₃O₃(OH)₅ 4H₂O
Rarity : Uncommon to fairly common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Ixiolite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : (Ta,Mn,Nb)O₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Jade

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ or NaAlSi₂O₆
Rarity : Rare to very common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Jadeite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : NaAlSi₂O₆
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Jahnsite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : CaMn(Mg,Fe)₂Fe₂(PO₄)₄(OH)₂ 8H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Jamesonite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₄FeSb₆S₁₄
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Jarlite

Class : Halides
Subclass : Oxyfluorides
Crystal system : Monoclinic
Chemistry : Na(Sr,Na)₇MgAl₆F₃₂(OH,H₂O)₂
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Johannsenite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : CaMnSi₂O₆
Rarity : Quite common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Jordanite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₁₄(As,Sb)₆S₂₃
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kaersutite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : NaCa₂Mg₄Ti(Si₆Al₂)O₂₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kainite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : KMg(SO₄)Cl 3H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kalinite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : KAl(SO₄)₂ 11H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kämmererite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Mg₅(Al,Cr)₂Si₃O₁₀(OH)₈
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kasolite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Pb(UO₂)SiO₄ H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kernite

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Monoclinic
Chemistry : Na₂B₄O₆(OH)₂ 3H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kidwellite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : NaFe₉(PO₄)₆(OH)₁₀ 5H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kieserite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : MgSO₄ H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Kinoite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Ca₂Cu₂Si₃O₈(OH)₄
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kolbeckite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : ScPO₄ 2H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Köttigite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Zn₃(AsO₄)₂ 8H₂O
Rarity : Rare to very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Kröhnkite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : Na₂Cu(SO₄)₂ 2H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Ktenasite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : (Cu,Zn)₅(SO₄)₂(OH)₆ H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Labuntsovite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclnic
Chemistry : (K,Na)₃Ti₂(SiO₃)₄(O,OH)₂ nH₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Lanarkite

Class : Sulfates, chromates, molybdates
Subclass : Anhydrous sulfates
Crystal system : Monoclinic
Chemistry : Pb₂(SO₄)O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Laumontite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : CaAl₂Si₄O₁₂ 4H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Lavenite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Na₂(Mn,Ca,Fe)ZrSi₂O₇(O,OH,F)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Lazulite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : MgAl₂(PO₄)₂(OH)₂
Rarity : Uncommon to rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Leadhillite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Monoclinic
Chemistry : Pb₄(SO₄)(CO₃)₂(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Legrandite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Zn₂(AsO₄)(OH) H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Lepidolite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Leucophosphite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : KFe₂(PO₄)₂(OH) 2H₂O
Rarity : Uncommon to fairly common

Size : µm / mm / cm / dm / m

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Linarite

Class : Sulphates, chromates, molybdates
Subclass : Anhydrous sulfates
Crystal system : Monoclinic
Chemistry : PbCuSO₄(OH)₂
Rarity : Fairly rare

Size : µm / mm / cm / dm / m

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Lindgrenite

Class : Sulfates, chromates, molybdates
Subclass : Monoclinic
Crystal system : Monoclinic
Chemistry : Cu₃(MoO₄)₂(OH)₂
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Liroconite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Cu₂Al(AsO₄)(OH)₄ 4H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Livingstonite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : HgSb₄S₈
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Lorandite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : TlAsS₂
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Ludlamite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Fe₃(PO₄)₂ 4H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Magadiite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : NaSi₇O₁₃(OH)₃ 4H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Malachite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Monoclinic
Chemistry : Cu₂CO₃(OH)₂
Rarity : Very common

Size : µm / mm / cm / dm / m

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Malayaite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinique
Chemistry : CaSnSiO₅
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Manganite

Class : Oxides and hydroxides
Subclass : Hydroxides and hydrates
Crystal system : Monoclinic
Chemistry : MnO(OH)
Rarity : Common

Size : µm / mm / cm / dm / m

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Margarite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : CaAl₂(Al₂Si₂)O₁₀(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Mcguinnessite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Monoclinic
Chemistry : (Mg,Cu)₂(CO₃)(OH)₂
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Melanterite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Triclinic
Chemistry : FeSO₄ 7H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Metavariscite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : AlPO₄ 2H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Miargyrite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : AgSbS₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Mica

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : WX_2-3 1-0Z₄O₁₀A₂
Rarity : Very common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Mirabilite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : Na₂SO₄ 10H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Mitridatite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Ca₂Fe₃O₂(PO₄)₃ 3H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Monazite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : CePO₄
Rarity : Very common

Size : µm / mm / cm / dm / m

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Montgomeryite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Ca₄MgAl₄(PO₄)₆(OH)₄ 12H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Montmorillonite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂ nH₂O
Rarity : Ubiquitous

Size : µm / mm / cm / dm / m

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Moraesite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Be₂(PO₄)(OH) 4H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Mosandrite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : (Na,Ca,Ce)₃TiSi₂O₇(F,OH,O)
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Mounanaite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous vanadates
Crystal system : Monoclinic
Chemistry : PbFe₂(VO₄)₂(OH)₂
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Muscovite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : KAl₂(Si₃Al)O₁₀(OH,F)₈
Rarity : Very common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Nacrite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Al₂Si₂O₅(OH)₄
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Natron

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : Na₂CO₃ 10H₂O
Rarity : Uncommon to fairly common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Nephrite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Neptunite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : KNa₂Li(Fe,Mn)₂Ti₂Si₈O₂₄
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Nesquehonite

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : MgCO₃ 3H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Nissonite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Cu₂Mg₂(PO₄)₂(OH)₂ 5H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Nontronite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Na_0,3Fe₂(Si,Al)₄O₁₀(OH)₂ nH₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Novacekite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl arsenates
Crystal system : Monoclinic
Chemistry : Mg(UO₂)₂(AsO₄)₂ 12H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Olivenite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous arsenates
Crystal system : Monoclinic
Chemistry : Cu₂(AsO₄)(OH)
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Omphacite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : (Ca,Na)(Mg,Fe,Al)Si₂O₆
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Onoratoite

Class : Halides
Subclass : Oxychlorides
Crystal system : Monoclinic
Chemistry : Sb₈O₁₁Cl₂
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Orpiment

Class : Sulfides and sulphosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : As₂S₃
Rarity : Faily common

Size : µm / mm / cm / dm / m

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Orthoclase

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : KAlSi₃O₈
Rarity : Ubiquitous

Size : µm / mm / cm / dm / m

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Ottrelite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : (Mn,Fe,Mg)₂Al₄Si₂O₁₀(OH)₄
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pachnolite

Class : Halides
Subclass : Fluorides
Crystal system : Monoclinic
Chemistry : NaCaAlF₆ H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Palygorskite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (Mg,Al)₂Si₄O₁₀(OH) 4H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Papagoite

Class : Silicates
Subclass : Cyclosilicates
Crystal system : Monoclinic
Chemistry : CaCuAlSi₂O₆(OH)₃
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Paragonite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Na₂Fe₅TiSi₆O₂₀
Rarity : Uncommon to fairly common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Paralaurionite

Class : Halides
Subclass : Oxychlorides
Crystal system : Monoclinic
Chemistry : PbCl(OH)
Rarity : Rare

Size : µm / mm / cm / dm / m

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Parasymplesite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Fe₃(AsO₄)₂ 8H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pargasite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : NaCa₂Mg₄Al(Si₆Al₂)O₂₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Patronite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : VS₄
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Petalite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : LiAlSi₄O₁₀
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pharmacolite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : CaHAsO₄ 2H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Phillipsite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : KCaAl₃Si₅O₁₆ 6H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Phlogopite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : KMg₃Si₃AlO₁₀(F,OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Phosphophyllite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Zn₂(Fe,Mn)₃(PO₄)₂ 4H₂O
Rarity : Rare to very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Phosphosiderite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : FePO₄ 2H₂O
Rarity : Fairly common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pickeringite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : MgAl₂(SO₄)₄ 22H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Piemontite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Ca₂(Mn,Fe)Al₂(SiO₄)₃(OH)
Rarity : Very common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pigeonite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : (Mg,Fe,Ca)₂Si₂O₆
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pinakiolite

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Monoclinic
Chemistry : Mg₂MnO₂BO₃
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pisanite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : (Fe,Cu)SO₄ 7H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Plagionite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₅Sb₈S₁₇
Rarity : Rare to very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Polybasite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Ag₁₆Sb₂S₁₁
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Posnjakite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : Cu₄SO₄(OH)₆ H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pseudolaueite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : MnFe₂(PO₄)₂(OH)₂ 8H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pseudomalachite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : Cu₅(PO₄)₂(OH)₄
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pumpellyite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Ca₂MgAl₂(SiO₄)(Si₂O₇)(OH)₂ H₂O
Rarity : Fairly common to common

Size : µm / mm / cm / dm / m

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Pyrophyllite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Al₂Si₄O₁₀(OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Pyrostilpnite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Ag₃SbS₃
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pyroxen

Class : Silicates
Subclass : Inosilicates
Crystal system : Orthorhombic or monoclinic
Chemistry : XYSi₂O₆
Rarity : Very common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Pyrrhotite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : FeS
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Quenselite

Class : Oxides and hydroxides
Subclass : Hydroxides and hydrates
Crystal system : Monoclinic
Chemistry : PbMnO₂(OH)
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Rameauite

Class : Oxides and hydroxides
Subclass : Uranyl hydroxides
Crystal system : Monoclinic
Chemistry : K₂CaU₆O₂₀ 9H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Raspite

Class : Sulfates, chromates, molybdates
Subclass : Tungstates
Crystal system : Hexagonal
Chemistry : PbWO₄
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Rathite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : (Ag,Pb,Tl)₃As₅S₁₀
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Realgar

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : AsS
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Richelsdorfite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Ca₂Cu₅Sb(AsO₄)₄(OH)₆Cl 6H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Riebeckite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Na₂Fe₅Si₈O₂₂(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Romanechite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : (Ba,H₂O)₂Mn₅O₁₀
Rarity : Quite common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Rosasite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Monoclinic
Chemistry : (Zn,Cu)₂(CO₃)(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Roscoelite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : KV₂AlSi₃O₁₀(OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Roselite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Ca₂(Co,Mg)(AsO₄)₂ 2H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Sabugalite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl phosphates
Crystal system : Monoclinic
Chemistry : HAl(UO₂)₄(PO₄)₄ 16H₂O
Rarity : Fairly common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Sainfeldite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Ca₅(AsO₄)₂(AsO₃OH)₂ 4H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Saléeite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl phosphates
Crystal system : Monoclinic
Chemistry : Mg(UO₂)₂(PO₄)₂ 10H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Salite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : CaMgSi₂O₆
Rarity : Common to very common

Size : µm / mm / cm / dm / m

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Samarskite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : (Y,Ce,Fe,U)(Bb,Ta)O₄
Rarity : Uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Sanidine

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : (Ca,Na)AlSi₃O₈
Rarity : Very common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Saponite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂ 4H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Sapphirine

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Mg₇Al₁₈Si₃O₄₀
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Sartorite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Monoclinic
Chemistry : PbAs₂S₄
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Scolecite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : CaAl₂Si₃O₁₀ 3H₂O
Rarity : Fairly common

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Scorzalite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : (Fe,Mg)Al₂(PO₄)₂(OH)₂
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

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Searlesite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : NaBSi₂O₅(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Semseyite

Class : Sulphides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Pb₉Sb₈S₂₁
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Sengierite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl vanadates
Crystal system : Monoclinic
Chemistry : Cu₂(UO₂)₂(VO₄)₂(OH)₂ 6H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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Serpentine

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Triclinic / Monoclinic
Chemistry : Mg₃Si₂O₅(OH)₄
Rarity : Common

Size : µm / mm / cm / dm / m

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Serpierite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : Ca(Cu,Zn)₄(SO₄)₂(OH)₆ 3H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Sklodowskite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : (H₃O)₂Mg(UO₂)₂(SiO₄)₂ 2H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Smectite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : X_0.3Y_2-3Z₄O₁₀(OH)₂ nH₂O
Rarity : Very common

Size : µm / mm / cm / dm / m

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Spencerite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Zn₄(PO₄)₂(OH)₂ 3H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Spodumene

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : LiAlSi₂O₆
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Staurolite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Fe₂Al₉(Si,Al)₄O₂₂(OH)₂
Rarity : Very common

Size : µm / mm / cm / dm / m

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Stilbite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : NaCa₂Al₅Si₁₃O₃₆ 14H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Strashimirite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Monoclinic
Chemistry : Cu₈(AsO₄)₄(OH)₄ 5H₂O
Rarity : Uncommon to rare

Size : µm / mm / cm / dm / m

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Studtite

Class : Oxides and hydroxides
Subclass : Uranyl hydroxides
Crystal system : Monoclinic
Chemistry : UO₄ 4H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Sursassite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Mn₂Al₃(SiO₄)(Si₂O₇)(OH)₃
Rarity : Rare

Size : µm / mm / cm / dm / m

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Sylvanite

Class : Sulfides and sulfosalts
Subclass : Tellurides
Crystal system : Monoclinic
Chemistry : AuAgTe₄
Rarity : Rare

Size : µm / mm / cm / dm / m

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Synchysite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Monoclinic
Chemistry : Ca(Ce,La)(CO₃)₂F
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Szaibelyite

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Monoclinic
Chemistry : MgBO₂(OH)
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Tacharanite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Ca₁₂Al₂Si₁₈O₅₁ 18H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Tadzhikite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Ca₃(Y,Ce)₂(Ti,Al,Fe)B₄Si₄O₂₂(O,OH)₂
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Talc

Class : Silciates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : Mg₃Si₄O₁₀(OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Tamarugite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : NaAl(SO₄)₂ 6H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Tenorite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : CuO
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Terlinguaite

Class : Halides
Subclass : Oxychlorides
Crystal system : Monoclinic
Chemistry : Hg₂ClO
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Thomsenolite

Class : Halides
Subclass : Fluorides
Crystal system : Monoclinic
Chemistry : NaCaAlF₆ H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Thortveitite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : (Sc,Y)₂Si₂O₇
Rarity : Rare to vey rare

Size : µm / mm / cm / dm / m

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Thorutite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : (Th,U,Ca)Ti₂(O,OH)₆
Rarity : Rare

Size : µm / mm / cm / dm / m

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Tilasite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous arsenates
Crystal system : Monoclinic
Chemistry : CaMg(AsO₄)F
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

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Tinsleyite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : KAl₂(PO₄)₂(OH) 2H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Titanite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinique
Chemistry : CaTiSiO₅
Rarity : Very common

Size : µm / mm / cm / dm / m

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Todorokite

Class : Oxides and hydroxides
Subclass : Hydroxides and hydrates
Crystal system : Monoclinic
Chemistry : (Mn,Ca,Mg)Mn₃O₇ H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Tremolite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Ca₂Mg₅Si₈O₂₂(OH)₂
Rarity : Common

Size : µm / mm / cm / dm / m

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Trimounsite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Y₂Ti₂SiO₉
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Triplite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : (Mn,Fe,Mg,Ca)₂(PO₄)(F,OH)
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Trona

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : Na₃CO₃(HCO₃) 2H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Tschermakite

Class : Silicates
Subclass : Inosilicates
Crystal system : Monoclinic
Chemistry : Ca₂Mg₃Al₂(Si₆Al₂)O₂₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Tsumebite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : Pb₂Cu(PO₄)(SO₄)(OH)
Rarity : Rare

Size : µm / mm / cm / dm / m

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Umohoite

Class : Sulfates, chromates, molybdates
Subclass : Uranyl molybdates
Crystal system : Monoclinic
Chemistry : (UO₂)MoO₄ 4H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Uranophane

Class : Silicates
Subclass : Nesosilicates
Crystal system : Monoclinic
Chemistry : Ca(UO₂)₂(Si₃OH)₂ 5H₂O
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Uranopilite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : (UO₂)₆(SO₄)(OH)₁₀ 12H₂O
Rarity : Uncommon to fairly common

Size : µm / mm / cm / dm / m

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Vanuralite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl vanadates
Crystal system : Monoclinic
Chemistry : Al(UO₂)₂(VO₄)₂(OH) 11H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Vauquelinite

Class : Sulfates, chromates, molybdates
Subclass : Chromates
Crystal system : Monoclinic
Chemistry : Pb₂Cu(CrO₄)(PO₄)(OH)
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

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Väyrynenite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : MnBe(PO₄)(OH,F)
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Vermiculite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : (Mg,Fe,Al)₃(Si,Al)₄O₁₀(OH)₂ 4H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Vesignieite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous vanadates
Crystal system : Monoclinic
Chemistry : BaCu₃(VO₄)₂(OH)₂
Rarity : Rare

Size : µm / mm / cm / dm / m

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Veszelyite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : (Cu,Zn)₃(PO₄)(OH)₃ 2H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Vivianite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : Fe₃(PO₄)₂ 8H₂O
Rarity : Common

Size : µm / mm / cm / dm / m

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Volborthite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated vanadates
Crystal system : Monoclinic
Chemistry : Cu₃V₂O₇(OH)₂ 2H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Wagnerite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : (Mg,Fe)₂(PO₄)F
Rarity : Uncommon to fairly common

Size : µm / mm / cm / dm / m

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Weloganite

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Monoclinic
Chemistry : Sr₃Na₂Zr(CO₃)₆ 3H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Whewellite

Class : Organic Compounds
Subclass : -
Crystal system : Monoclinic
Chemistry : CaC₂O₄ H₂O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Whiteite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Monoclinic
Chemistry : CaMn²⁺Mn²⁺₂Al₂(PO₄)₄(OH)₂ 8H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Wodginite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Monoclinic
Chemistry : Mn(Sn,Ta)Ta₂O₈
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Wöhlerite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Monoclinic
Chemistry : Na₂Ca₄ZrNb(Si₂O₇)₂(O,F)₄
Rarity : Uncommon to fairly common

Size : µm / mm / cm / dm / m

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Wolframite

Class : Sulfates, chromates, molybdates
Subclass : Tungstates
Crystal system : Monoclinic
Chemistry : (Fe²⁺,Mn²⁺)WO₄
Rarity : Quite common

Size : µm / mm / cm / dm / m

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Wroewolfeite

Class : Sulfates, chromates, molybdates
Subclass : Hydrated sulfates
Crystal system : Monoclinic
Chemistry : Cu₄SO₄(OH)₆ 2H₂O
Rarity : Rare

Size : µm / mm / cm / dm / m

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Xanthoconite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Monoclinic
Chemistry : Ag₃AsS₃
Rarity : Rare

Size : µm / mm / cm / dm / m

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Yugawaralite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Monoclinic
Chemistry : CaAl₂Si₆O₁₆ 4H₂O
Rarity : Very rare

Size : µm / mm / cm / dm / m

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Zinnwaldite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Monoclinic
Chemistry : K(Li,Fe,Al)₃(AlSi₃O₈)O₁₀(F,OH)₂
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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Zwieselite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Monoclinic
Chemistry : (Fe,Mn)₂(PO₄)F
Rarity : Very rare

Size : µm / mm / cm / dm / m

Click on the photo for more information

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