Basis data mineral & terapi kristalMineralXianhuaite-(La)Xianhuaite-(La)K2LaNb5O15Tetragonale crown IMA approvedKomposisiComposizione (% in peso)NbOLaKNbNiobium50.4%OOxygen26.0%LaLanthanum15.1%KPotassium8.5%