Fluorite Cheetham A, Fender B, Cooper M Journal of Physics C: Solid State Physics 4 (1971) 3107-3121 Defect structure of calcium fluoride containing excess anions: I. Bragg scattering _cod_database_code 1000043 _database_code_amcsd 0013161 5.462 5.462 5.462 90 90 90 Fm3m atom x y z Ca 0 0 0 F .25 .25 .25