Model
Class : Phosphates, arsenates, vanadatesSubclass : Hydrated ArsenatesCrystal system : TriclinicChemistry : Na2Fe5TiSi6O20Rarity : Rare
Size : µm / mm / cm / dm / m
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Amber
Class : Organic compoundsSubclass : -Crystal system : AmorphousChemistry : C,H,ORarity : Rare to common
Mellite
Class : Organic compoundsSubclass : -Crystal system : TetragonalChemistry : Al2C6(COO)6 16H2ORarity : Rare
Whewellite
Class : Organic CompoundsSubclass : -Crystal system : MonoclinicChemistry : CaC2O4 H2ORarity : Uncommon