Model
Class : Phosphates, arsenates, vanadatesSubclass : Hydrated ArsenatesCrystal system : TriclinicChemistry : Na2Fe5TiSi6O20Rarity : Rare
Size : µm / mm / cm / dm / m
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Chromite
Class : Oxides and hydroxidesSubclass : OxidesCrystal system : CubicChemistry : FeCr2O4Rarity : Common
Crocoite
Class : Sulphates, chromates, molybdatesSubclass : ChromatesCrystal system : MonoclinicChemistry : PbCrO4Rarity : Rare
Emerald
Class : SilicatesSubclass : CyclosilicatesCrystal system : HexagonalChemistry : Be3(Al,Cr3+,V3+)2Si6O18Rarity : Rare
Eskolaite
Class : Oxides and hydroxidesSubclass : OxidesCrystal system : TrigonalChemistry : Cr2O3Rarity : Very rare
Fornacite
Class : Sulfates, chromates, molybdatesSubclass : ChromatesCrystal system : MonoclinicChemistry : Pb2Cu(AsO4)(CrO4)(OH)Rarity : Very rare
Kämmererite
Class : SilicatesSubclass : PhyllosilicatesCrystal system : MonoclinicChemistry : Mg5(Al,Cr)2Si3O10(OH)8Rarity : Very rare
Stichtite
Class : Carbonates, nitrates, boratesSubclass : Hydrated carbonatesCrystal system : TrigonalChemistry : Mg6Cr2(CO3)(OH)16 4H2ORarity : Uncommon to rare
Vauquelinite
Class : Sulfates, chromates, molybdatesSubclass : ChromatesCrystal system : MonoclinicChemistry : Pb2Cu(CrO4)(PO4)(OH)Rarity : Rare to uncommon