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 = 130 K _database_code_amcsd 0002635 5.86243 8.76981 13.1063 90 90 90 Pmcn atom x y z occ Uiso Ca -.25 .0812 .2496 .0059 Al 0 0 0 .97 .0010 Fe 0 0 0 .03 .0010 Ala 0 0 .5 .97 .0010 Fea 0 0 .5 .03 .0010 Si -.25 .7298 .1319 .0029 Sia -.25 .7285 .3659 .0029 O1 -.25 -.2019 .2487 .0042 O2 .0243 .1226 .1207 .0040 O2a .0230 .1230 .3848 .0040 O3 -.25 -.1139 .0628 .0023 O3a -.25 -.1136 .4333 .0023 O4 -.25 .3925 .0514 .0029 O4a -.25 .3812 .4612 .0029 O5 -.25 .3575 .2482 .0121 Dw -.25 .3841 .1723 .0280 Dwa -.25 .4379 .2878 .059 Dd -.25 .2797 .0313 .0213 Dda -.25 .3189 .4042 .031