Lawsonite Meyer H W, Marion S, Sondergeld P, Carpenter M A, Knight K S, Redfern S A T, Dove M T American Mineralogist 86 (2001) 566-577 Displacive components of the low-temperature phase transitions in lawsonite T = 225 K _database_code_amcsd 0002637 5.85942 8.78269 13.1209 90 90 90 Pmcn atom x y z occ Uiso Ca -.25 .0812 .2492 .0083 Al 0 0 0 .97 .0026 Fe 0 0 0 .03 .0026 Ala 0 0 .5 .97 .0026 Fea 0 0 .5 .03 .0026 Si -.25 .7298 .1323 .0039 Sia -.25 .7291 .3660 .0039 O1 -.25 -.2022 .2492 .0061 O2 .0224 .1242 .1195 .0049 O2a .0234 .1304 .3845 .0049 O3 -.25 -.1138 .0638 .0039 O3a -.25 -.1129 .4330 .0039 O4 -.25 .3943 .0515 .0049 O4a -.25 .3835 .4594 .0049 O5 -.25 .3586 .2488 .0183 Dw -.25 .3912 .1746 .038 Dwa -.25 .4337 .2925 .060 Dd -.25 .2794 .0350 .026 Dda -.25 .3132 .4092 .043