Forsterite Kudoh Y, Takeuchi Y Zeitschrift fur Kristallographie 171 (1985) 291-302 The crystal structure of forsterite Mg2SiO4 under high pressure up to 149 kb Sample: P = 47 kbar _database_code_amcsd 0010929 4.716 10.031 5.901 90 90 90 Pbnm atom x y z Biso Mg1 0 0 0 .28 Mg2 .9920 .2776 .25 .08 Si .4263 .0939 .25 .05 O1 .7667 .0910 .25 .37 O2 .2222 .4471 .25 .25 O3 .2785 .1634 .0329 .22