Enstatite Hugh-Jones D A, Angel R J American Mineralogist 79 (1994) 405-410 A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa Sample: P = 7.00 GPa _database_code_amcsd 0001651 17.983 8.6241 5.0902 90 90 90 Pbca atom x y z Biso Mg1 .3762 .6560 .8567 .33 Mg2 .3775 .4845 .3472 .47 SiA .2711 .3431 .0399 .32 SiB .4725 .3373 .8031 .26 O1a .1828 .340 .021 .41 O2a .3088 .509 .033 .48 O3a .3044 .223 .817 .30 O1b .5627 .336 .812 .55 O2b .4330 .485 .686 .16 O3b .4479 .190 .613 .19