AM_Pentlandite_18 Formula: (Fe5.005 Ni3.995) S8 Name: Pentlandite Unit cell: 10.128 10.128 10.128 90.0 90.0 90.0 , V=1038.89 Space group: FM3M (225)

Tsukimura K , Nakazawa H , Endo T , Fukunaga O , Physics and Chemistry of Minerals , 19 (1992) p.203-212, Cation distribution in Pentlandites (Fe,Ni)9S8: dependence of pressure and, temperature and kinetics of the cation exchange reaction, Sample: Synthetic, Fe/(Fe+Ni) = .556, T = 523 K, P = 1 GPa, Note: structure was not refined in this study