Periclase Hazen R M American Mineralogist 61 (1976) 266-271 Effects of temperature and pressure on the cell dimension and X-ray temperature factors of periclase T = 605 C, P = 1 atm _database_code_amcsd 0000506 4.241 4.241 4.241 90 90 90 Fm3m atom x y z Biso Mg 0 0 0 1.33 O .5 .5 .5 1.12