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 #AU77 Locality: synthetic _database_code_amcsd 0018947 5.8417 8.7904 13.1345 90 90 90 Cmcm atom x y z occ Ca 0 .3320 .25 .971 Sr 0 .3320 .25 .029 Al .25 .25 0 Si 0 .9805 .1332 O1 0 .0481 .25 O2 .2725 .3796 .1171 O3 0 .1387 .0652 OH4 0 .6401 .0492 Wat5 0 .608 .25