O Sr Primak W, Kaufman H, Ward R Journal of the American Chemical Society 70 (1948) 2043-2046 X-Ray Diffraction Studies of Systems Involved in the Preparation of Alkaline Earth Sulfide and Selenide Phosphors _cod_database_code 1100027 _database_code_amcsd 0018224 5.1396 5.1396 5.1396 90 90 90 Fm3m atom x y z Sr1 0 0 0 O1 .5 .5 .5