Lawsonite Comodi P, Zanazzi P F American Mineralogist 81 (1996) 833-841 Effects of temperature and pressure on the structure of lawsonite P = 0.001 kbar, T = 538 C _database_code_amcsd 0001804 8.860 5.888 13.201 90 90 90 Ccmm atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ca .3326 0 .25 .031 .025 .036 0 0 0 Al .25 .25 0 .014 .010 .027 .0000 -.0024 -.0019 Si .9799 0 .1329 .0111 .0110 .024 0 .0000 0 O1 .046 0 .25 .031 .031 .017 0 0 0 O2 .3793 .2736 .1168 .020 .015 .032 .000 -.005 -.004 O3 .1373 0 .0658 .014 .019 .028 0 .000 0 O4 .6396 0 .0466 .014 .013 .034 0 .0074 0 O5 .613 0 .25 .046 .079 .035 0 0 0