Superhydrous Phase B Koch-Muller M, Dera P, Fei Y, Hellwig H, Liu Z, Van Orman J, Wirth R Physics and Chemistry of Minerals 32 (2005) 349-361 Polymorphic phase transition in Superhydrous Phase B Sample: MKM0105 Note: z(O6) corrected by authors _database_code_amcsd 0008972 14.024 5.109 8.733 90 90 90 Pnn2 atom x y z Mg1 .1731 .3279 .0053 Mg2A .1775 .8358 .1752 Mg2B .3240 .3461 .3242 Mg3A 0 .5000 .8286 Mg3B 0 .5000 .1870 Mg4A 0 0 .6625 Mg4B 0 0 .3455 Si1 0 0 .0077 Si2 .3766 .0141 .0051 O1 .4153 .7088 .9936 O2 .0783 .6931 .0050 O3A .2495 .0220 .3451 O3B .2552 .5120 .1620 O4A .0760 .1440 .1531 O4B .4298 .6470 .3619 O5A .4145 .1530 .1599 O5B .0889 .6850 .3479 O6 .2598 .0048 .0070 H1 .3 .6 .1 H2 .27 .18 .45