Database minerali e cristalloterapiaMineraliFriedrichiteHelix84ยทCC BY 2.0ยทWikimediaFriedrichiteCu5Pb5Bi7S18 IMA approvedComposizioneComposizione (% in peso)BiPbSCuBiBismuth43.1%PbLead30.5%SSulfur17.0%CuCopper9.4%