Ahrensite 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 = 1.000, synthesized at 1200 C, 10 GPa Locality: synthetic _database_code_amcsd 0008507 8.2374 8.2374 8.2374 90 90 90 Fd3m atom x y z occ FeO .625 .625 .625 .987 SiO .625 .625 .625 .013 FeT 0 0 0 .026 SiT 0 0 0 .974 O .3656 .3656 .3656