Bi8 La10 O27 Michel C, Caignaert V, Raveau B Journal of Solid State Chemistry 90 (1991) 296-301 An oxygen deficient fluorite with a tunnel structure: Bi8La10O27 _cod_database_code 1001470 _database_code_amcsd 0013696 12.079 16.348 4.0988 90 90 90 Immm atom x y z occ Bi1 .3158 0 0 Bi2 0 .3394 0 La1 .3492 .3203 0 La2 0 0 0 O1 0 .063 .5 O2 0 .241 .5 O3 .228 .073 0 O4 .161 .260 0 O5 .154 .439 0 .375