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 = 31 kbar _database_code_amcsd 0010928 4.724 10.077 5.942 90 90 90 Pbnm atom x y z Biso Mg1 0 0 0 .30 Mg2 .9894 .2739 .25 .12 Si .4258 .0971 .25 .10 O1 .7656 .0883 .25 .35 O2 .2153 .4481 .25 .35 O3 .2781 .1639 .0322 .32