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 1001471 _database_code_amcsd 0013697 12.079 16.348 4.0988 90 90 90 Immm atom x y z occ Bi1 .3110 0 0 Bi2 0 .3316 0 La1 .3430 .3225 0 La2 0 0 0 O1 0 .0916 .5 O2 0 .2776 .5 O3 .1878 .0864 0 O4 .1541 .2647 0 O5 .1672 .4446 0 .375