AM_Geocronite Formula: Pb15 Sb4 As2 S24 Name: Geocronite Unit cell: 8.963 31.93 8.5 90.0 118.02 90.0 , V=2147.46 Space group: P121/M1 (11)

Birnie R W , Burnham C W , American Mineralogist , 61 (1976) p.963-970, The crystal structure and extent of solid solution of geocronite