AM_Pentlandite_15 Formula: (Fe5.003 Ni3.997) S8 Name: Pentlandite Unit cell: 10.139 10.139 10.139 90.0 90.0 90.0 , V=1042.28 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 = 293 K, P = 0 GPa, Note: structure was not refined in this study