Fe2.25Si.75O4 Yamanaka T, Shimazu H, Ota K Physics and Chemistry of Minerals 28 (2001) 110-118 Electric conductivity of Fe2SiO4-Fe3O4 spinel solid solutions Sample: Fe(3-x)SixO4, x = 0.750, synthesized at 1200 C, 10 GPa Locality: synthetic _database_code_amcsd 0008505 8.286 8.286 8.286 90 90 90 Fd3m atom x y z occ FeO .625 .625 .625 .963 SiO .625 .625 .625 .037 FeT 0 0 0 .324 SiT 0 0 0 .676 O .3700 .3700 .3700