AM_Parkerite Formula: Ni1.5 Bi S Name: Parkerite Unit cell: 5.545 5.731 4.052 90.0 90.0 90.0 , V=128.77 Space group: PMAM (51)

Fleet M E , American Mineralogist , 58 (1973) p.435-439, The crystal structure of parkerite (Ni3Bi2S2)