CHROMIUM MINERALS

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Chromite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Cubic
Chemistry : FeCr2O4
Rarity : Common

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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Emerald

Class : Silicates
Subclass : Cyclosilicates
Crystal system : Hexagonal
Chemistry : Be3(Al,Cr3+,V3+)2Si6O18
Rarity : Rare

Size : µm / mm / cm / dm / m

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Eskolaite

Class : Oxides and hydroxides
Subclass : Oxides
Crystal system : Trigonal
Chemistry : Cr2O3
Rarity : Very rare

Size : µm / mm / cm / dm / m

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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

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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

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Stichtite

Class : Carbonates, nitrates, borates
Subclass : Hydrated carbonates
Crystal system : Trigonal
Chemistry : Mg6Cr2(CO3)(OH)16 4H2O
Rarity : Uncommon to 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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