AM_Periclase_196 Formula: Mg O Name: Periclase Unit cell: 4.1752 4.1752 4.1752 90.0 90.0 90.0 , V=72.78 Space group: FM3M (225)

Zhang J , Physics and Chemistry of Minerals , 27 (2000) p.145-148, Effect of pressure on the thermal expansion of MgO up to 8.2 GPa, Sample: Run3 at T = 973 K, P = 8.21 GPa