CaSO4 Crichton W A, Parise J B, Antao S M, Grzechnik A American Mineralogist 90 (2005) 22-27 Evidence for monazite-, barite-, and AgMnO4 (distorted barite)-type structures of CaSO4 at high pressure and temperature Sample: P = 11.8 GPa _database_code_amcsd 0003661 6.3769 6.6439 6.1667 90 102.220 90 P2_1/n atom x y z Uiso Ca .2685 .1592 .0981 .010 S .3036 .1664 .6278 .010 O1 .2488 .0003 .4401 .025 O2 .3573 .3480 .4915 .025 O3 .4745 .1197 .7932 .025 O4 .1192 .2202 .7110 .025