Xanthoconite
Class : Sulfides and sulfosaltsSubclass : SulfosaltsCrystal system : MonoclinicChemistry : Ag3AsS3Rarity : Rare
Size : µm / mm / cm / dm / m
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Xenotime
Class : Phosphates, arsenates, vanadatesSubclass : Anhydrous phosphatesCrystal system : TetragonalChemistry : YPO4Rarity : Uncommon