Basis data mineral & terapi kristalMineralPetewilliamsitePetewilliamsite(Ni,Co)30(As2O7)15Monoclino third eye IMA approvedKomposisiComposizione (% in peso)AsNiOAsArsenic39.5%NiNickel31.0%OOxygen29.5%EtimologiDinamai dari Peter A. Williams.Chakra sekundercrown