MINERALS IN U

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Ulexite

Class : Carbonates, nitrates, borates
Subclass : Borates
Crystal system : Triclinic
Chemistry : NaCaB5O6(OH)6 5H2O
Rarity : Fairly common

Size : µm / mm / cm / dm / m

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Ullmannite

Class : Sulfides and sulfosalts
Subclass : Sulfides
Crystal system : Cubic
Chemistry : NiSbS
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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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

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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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Uraninite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Cubic
Chemistry : UO2
Rarity : Common

Size : µm / mm / cm / dm / m

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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

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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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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

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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

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Uvite

Class : Silicates
Subclass : Cyclosilicates
Crystal system : Trigonal
Chemistry : Ca(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4
Rarity : Uncommon

Size : µm / mm / cm / dm / m

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