Bridgmanite Ross N L, Hazen R M Physics and Chemistry of Minerals 17 (1990) 228-237 High-pressure crystal chemistry of MgSiO3 perovskite Sample: P = 5.0 GPa Locality: synthetic _database_code_amcsd 0007486 4.746 4.899 6.8538 90 90 90 Pbnm atom x y z Biso Mg .5151 .5558 .25 .81 Si .5 0 .5 .51 O1 .1019 .4627 .25 .87 O2 .1976 .2014 .5518 .41