Lawsonite Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M American Mineralogist 95 (2010) 724-735 Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition Note: Run #AU78 Locality: synthetic _database_code_amcsd 0018948 5.8415 8.7916 13.1360 90 90 90 Cmcm atom x y z occ Ca 0 .3328 .25 .965 Sr 0 .3328 .25 .035 Al .25 .25 0 Si 0 .9809 .1330 O1 0 .048 .25 O2 .2726 .3796 .1175 O3 0 .1384 .0652 OH4 0 .6395 .0489 Wat5 0 .608 .25