AM_Periclase_2 Formula: Mg O Name: Periclase Unit cell: 4.217 4.217 4.217 90.0 90.0 90.0 , V=74.99 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 = 150 C, P = 1 atm