Periclase Dubrovinsky L S, Saxena S K Physics and Chemistry of Minerals 24 (1997) 547-550 Thermal expansion of periclase (MgO) and tungsten (W) to melting temperatures Sample: T = 1915 K _database_code_amcsd 0008050 4.3141 4.3141 4.3141 90 90 90 Fm3m atom x y z Mg 0 0 0 O .5 .5 .5