Magnesite Ross N L American Mineralogist 82 (1997) 682-688 The equation of state and high-pressure behaviour of magnesite Sample: at P = 4.16 GPa _database_code_amcsd 0001908 4.5988 4.5988 14.7525 90 90 120 R-3c atom x y z Biso Mg 0 0 0 .29 C 0 0 .25 .32 O .2803 0 .25 .37