AM_Bornite_7 Formula: Cu1.25 Fe.25 S Name: Bornite Unit cell: 6.7 6.7 6.7 33.53 33.53 33.53 , V=81.74 Space group: R3M (160)

Morimoto N , Acta Crystallographica , 17 (1964) p.351-360, Structures of two polymorphic forms of Cu5FeS4, Locality: synthetic, Sample: metastable, twin process