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 #AU63 Locality: synthetic _database_code_amcsd 0018950 5.8439 8.8112 13.1618 90 90 90 Cmcm atom x y z occ Ca 0 .3330 .25 .889 Sr 0 .3330 .25 .111 Al .25 .25 0 Si 0 .9824 .1333 O1 0 .051 .25 O2 .275 .377 .1199 O3 0 .139 .064 OH4 0 .642 .049 Wat5 0 .606 .25