AM_Tetrahedrite_5 Formula: Cu11.4 S12.77 Sb4 Name: Tetrahedrite Unit cell: 10.323 10.323 10.323 90.0 90.0 90.0 , V=1100.06 Space group: I-43M (217)

Makovicky E , Skinner B J , The Canadian Mineralogist , 17 (1979) p.619-634, Studies of the sulfosalts of copper, VII. Crystal structures of the exolution products Cu12.3Sb4S13, and Cu13.8Sb4S13 of unsubstituted synthetic tetrahedrite, Sample: Cu-poor tetrahedrite Cu12.3Sb4S13