AM_Ullmannite Formula: (Ni.97 Co.03) S.98 As.1 Sb.91 Bi.01 Name: Ullmannite Unit cell: 5.886 5.886 5.886 90.0 90.0 90.0 , V=203.92 Space group: P213 (198)

Bayliss P , American Mineralogist , 62 (1977) p.369-373, Crystal structure refinement of arsenian ullmannite, approximate cubic structure