AM_Ullmannite_2 Formula: (Ni.86 Co.14) S Sb Name: Ullmannite Unit cell: 5.9218 5.9218 5.9218 90.0 90.0 90.0 , V=207.66 Space group: P213 (198)

Pratt J L , Bayliss P , American Mineralogist , 65 (1980) p.154-156, Crystal structure refinement of a cobaltian ullmannite