AM_Periclase_5 Formula: Mg O Name: Periclase Unit cell: 4.241 4.241 4.241 90.0 90.0 90.0 , V=76.28 Space group: FM3M (225)

Hazen R M , American Mineralogist , 61 (1976) p.266-271, Effects of temperature and pressure on the cell dimension and X-ray temperature, factors of periclase, T = 605 C, P = 1 atm