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 = 175 K _database_code_amcsd 0002636 5.86092 8.77586 13.1132 90 90 90 Pmcn atom x y z occ Uiso Ca -.25 .0810 .2493 .0065 Al 0 0 0 .97 .0016 Fe 0 0 0 .03 .0016 Ala 0 0 .5 .97 .0016 Fea 0 0 .5 .03 .0016 Si -.25 .7291 .1324 .0038 Sia -.25 .7292 .3664 .0038 O1 -.25 -.2020 .2488 .0057 O2 .0235 .1231 .1202 .0045 O2a .0230 .1305 .3847 .0045 O3 -.25 -.1137 .0636 .0027 O3a -.25 -.1137 .4332 .0027 O4 -.25 .3934 .0512 .0044 O4a -.25 .3822 .4601 .0044 O5 -.25 .3580 .2484 .0142 Dw -.25 .3875 .1734 .032 Dwa -.25 .4371 .2902 .058 Dd -.25 .2796 .0329 .0238 Dda -.25 .3158 .4063 .038