KMgF3 Burns P C, Hawthorne F C, Hofmeister A M, Moret S L Physics and Chemistry of Minerals 23 (1996) 141-150 A structural phase-transition in K(Mg1-xCux)F3 perovskite Sample: x = 0.000 _database_code_amcsd 0007945 3.9859 3.9859 3.9859 90 90 90 Pm3m atom x y z K .5 .5 .5 Mg 0 0 0 F .5 0 0