Mg2 Si Owen E, Preston G Nature 113 (1924) 914-914 The atomic structure of two intermetallic compounds _cod_database_code 1010412 _database_code_amcsd 0017337 6.391 6.391 6.391 90 90 90 Fm3m atom x y z Mg1 .25 .25 .25 Si1 0 0 0