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 = 53 kbar _database_code_amcsd 0010930 4.709 10.010 5.896 90 90 90 Pbnm atom x y z Biso Mg1 0 0 0 .18 Mg2 .9913 .2773 .25 .20 Si .4268 .0941 .25 .06 O1 .7660 .0915 .25 .24 O2 .2209 .4476 .25 .18 O3 .2766 .1628 .0319 .25