AM_Pyrrhotite_3
Formula: Fe2.747 Ni.253 S3
Name: Pyrrhotite
Unit cell: 6.8973 11.954 17.602 90.0 101.302 90.0 , V=1423.15
Space group: C1C1 (9)

De Villiers J P R , Liles D C , American Mineralogist , 95 (2010) p.148-152, The crystal-structure and vacancy distribution in 6C pyrrhotite, Locality: Mponeng Mine, South Africa