MINERALS OF TETRAGONAL SYSTEM

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Akermanite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Tetragonal
Chemistry : CaMgSiO7
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Anatase

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : TiO2
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Apophyllite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Tetragonal
Chemistry : (K,Na)Ca4Si8O20(OH,F) 8H2O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Apuanite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : Fe5Sb4O12S
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Bismutite

Class : Carbonates, Nitrates, Borates
Subclass : Anhydrous carbonates
Crystal system : Tetragonal
Chemistry : Bi2O2(CO3)
Rarity : Fairly common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Braunite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Tetragonal
Chemistry : Mn7SiO12
Rarity : Common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Calomel

Class : Halides
Subclass : Chlorides
Crystal system : Tetragonal
Chemistry : HgCl
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Carletonite

Class : Silicates
Subclass : Phyllosilicates
Crystal system : Tetragonal
Chemistry : KNa4Ca4Si8O18(CO3)4(OH,F) H2O
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Cassiterite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : SnO2
Rarity : Common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Chalcopyrite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Tetragonal
Chemistry : CuFeS2
Rarity : Very common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Chernovite

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous arsenates
Crystal system : Tetragonal
Chemistry : YAsO4
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Chillagite

Class : Sulfates, chromates, molybdates
Subclass : Molybdates
Crystal system : Tetragonal
Chemistry : PbMoO4
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Coffinite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Tetragonal
Chemistry : U(SiO4)(OH)4
Rarity : Quite common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Cristobalite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Tetragonal
Chemistry : SiO2
Rarity : Common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Cumengeite

Class : Halides
Subclass : Oxychlorides
Crystal system : Tetragonal
Chemistry : Pb21Cu20Cl42(OH)40
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Cyrilovite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Tetragonal
Chemistry : NaFe3(PO4)2(OH)4 2H2O
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Diaboleite

Class : Halides
Subclass : Oxychlorides
Crystal system : Tetragonal
Chemistry : Pb2CuCl2(OH)4
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Famatinite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Tetragonal
Chemistry : Cu3SbS4
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Fergusonite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : YNbO4
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Fresnoite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Tetragonal
Chemistry : Ba2TiOSi2O7
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Gallite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Tetragonal
Chemistry : CuGaS2
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Gehlenite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Tetragonal
Chemistry : Ca2Al(AlSi)O7
Rarity : Quite common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Gonnardite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Tetragonal
Chemistry : Na2CaAl4Si6O20 7H2O
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Hausmannite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : Mn3O4
Rarity : Quite common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Heinrichite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl arsenates
Crystal system : Tetragonal
Chemistry : Ba(UO2)2(AsO4)2 10H2O
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Hetaerolite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : ZnMn2O4
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Ilmenorutile

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : (Ti,Nb,Fe)TiO3
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Kahlerite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl arsenates
Crystal system : Triclinic
Chemistry : Fe(UO2)2(AsO4)2 12H2O
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Leucite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Tetragonal
Chemistry : KAlSi2O6
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Litharge

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : PbO
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Luzonite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Tetragonal
Chemistry : Cu3AsS4
Rarity : Rare to uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Mackinawite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Tetragonal
Chemistry : (Fe,Ni)9S8
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Matlockite

Class : Halides
Subclass : Chlorofluorides
Crystal system : Tetragonal
Chemistry : PbFCl
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Maucherite

Class : Sulfides and sulfosalts
Subclass : Arsenides
Crystal system : Tetragonal
Chemistry : Ni11As8
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Melanophlogite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Tetragonal
Chemistry : SiO2 n(C,H,O,S)
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Melilite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Tetragonal
Chemistry : (Ca,Na)2(Al,Mg)(Si,Al)2O7
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Mellite

Class : Organic compounds
Subclass : -
Crystal system : Tetragonal
Chemistry : Al2C6(COO)6 16H2O
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Meta-autunite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl phosphate
Crystal system : Tetragonal
Chemistry : Ca(UO2)2(PO4)2 6H2O
Rarity : Quite common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Meta-lodevite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl arsenates
Crystal system : Tetragonal
Chemistry : Zn(UO2)2(AsO4)2 10H2O
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Meta-torbernite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl phosphates
Crystal system : Tetragonal
Chemistry : Cu(UO2)2(PO4)2 8H2O
Rarity : Quite common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Minium

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : Pb3O4
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Mizzonite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Tetragonal
Chemistry : (Ca,Na)4(Al,Si)12O24(CO3,Cl)
Rarity : Fairly common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Nagyágite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Tetragonal
Chemistry : (Pb,Sb)2(Au,Te)S2
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Narsarsukite

Class : Silicates
Subclass : Inosilicates
Crystal system : Tetragonal
Chemistry : Na2(Ti,Fe)Si4(O,F)11
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Phosgenite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Tetragonal
Chemistry : Pb2CO3Cl2
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Plattnerite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : PbO2
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Powellite

Class : Sulfates, chromates, molybdates
Subclass : Molybdates
Crystal system : Tetragonal
Chemistry : CaMoO4
Rarity : Uncommon to rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Pseudoboleite

Class : Halides
Subclass : Oxychlorides
Crystal system : Tetragonal
Chemistry : Pb31Cu24Cl62(OH)48
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Pyrolusite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : MnO2
Rarity : Very common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Renierite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Tetragonal
Chemistry : (Cu,Zn)11(Ge,As)2Fe4S16
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Routhierite

Class : Sulfides and sulfosalts
Subclass : Sulfosalts
Crystal system : Tetragonal
Chemistry : (Tl,Cu,Ag)HgAsS3
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Rutile

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : TiO2
Rarity : Very common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Scapolite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Tetragonal
Chemistry : Na4Al3Si9O24Cl à Ca4Al6Si6O24CO3
Rarity : Quite common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Scheelite

Class : Sulphates, chromates, vanadates
Subclass : Tungstates
Crystal system : Tetragonal
Chemistry : CaWO4
Rarity : Common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Sellaite

Class : Halides
Subclass : Fluorides
Crystal system : Tetragonal
Chemistry : MgF2
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Stannite

Class : Sulfides and Sulfosalts
Subclass : Sulfides
Crystal system : Tetragonal
Chemistry : Cu2FeSnS4
Rarity : Fairly common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Stishovite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Tetragonal
Chemistry : SiO2
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Stolzite

Class : Sulphates, chromates, molybdates
Subclass : Tungstates
Crystal system : Tetragonal
Chemistry : PbWO4
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Tapiolite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Tetragonal
Chemistry : (Fe,Mn)(Ta,Nb)2O6
Rarity : Fairly common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Thorite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Tetragonal
Chemistry : ThSiO4
Rarity : Quite common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Thorogummite

Class : Silicates
Subclass : Nesosilicates
Crystal system : Tetragonal
Chemistry : (Th,U)(SiO4)(OH)4
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Torbernite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Tetragonal
Chemistry : Cu(UO2)2(PO4)2 10H2O
Rarity : Quite common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Trögerite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl arsenates
Crystal system : Tetragonal
Chemistry : (UO2)3(AsO4)2 12H2O
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Tugtupite

Class : Silicates
Subclass : Tectosilicates
Crystal system : Tetragonal
Chemistry : Na4AlBeSi4O12Cl
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Tunisite

Class : Carbonates, nitrates, borates
Subclass : Anhydrous carbonates
Crystal system : Tetragonal
Chemistry : NaCa2Al4(CO3)4(OH)8Cl
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Umangite

Class : Sulfides and sulfosalts
Subclass : Selenides
Crystal system : Tetragonal
Chemistry : Cu3Se2
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Uranocircite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl phosphates
Crystal system : Tetragonal
Chemistry : Ba(UO2)2(PO4)2 10H2O
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Uranospathite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl phosphates
Crystal system : Tetragonal
Chemistry : HAl(UO2)4(PO4)4 40H2O
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Uranospinite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl arsenates
Crystal system : Tetragonal
Chemistry : Ca(UO2)2(AsO4)2 10H2O
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Vesuvianite

Class : Silicates
Subclass : Sorosilicates
Crystal system : Tetragonal
Chemistry : Ca10Mg2Al4(SiO4)5(Si2O7)(OH)
Rarity : Common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Wardite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Tetragonal
Chemistry : NaAl3(PO4)2(OH)4 2H2O
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Wiluite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated Arsenates
Crystal system : Tetragonal
Chemistry : Ca19MgAl4(Al,Mg)8(B,◻)4◻[(SiO4)10]O(O,OH)9
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Wulfenite

Class : Sulfates, chromates, molybdates
Subclass : Molybdates
Crystal system : Tetragonal
Chemistry : PbMoO4
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Xenotime

Class : Phosphates, arsenates, vanadates
Subclass : Anhydrous phosphates
Crystal system : Tetragonal
Chemistry : YPO4
Rarity : Uncommon

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Zapatalite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Tetragonal
Chemistry : Cu3Al4(PO4)3(OH)9 4H2O
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Zdenekite

Class : Phosphates, arsenates, vanadates
Subclass : Hydrated arsenates
Crystal system : Tetragonal
Chemistry : NaPbCu5(AsO4)4Cl 5H2O
Rarity : Very rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Zeunerite

Class : Phosphates, arsenates, vanadates
Subclass : Uranyl arsenates
Crystal system : Tetragonal
Chemistry : Cu(UO2)2(AsO4)2 16H2O
Rarity : Rare

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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Zircon

Class : Silicates
Subclass : Nesosilicates
Crystal system : Tetragonal
Chemistry : ZrSiO4
Rarity : Very common

Size : µm / mm / cm / dm / m

   Click on the photo for more information

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