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 #AU62 Locality: synthetic _database_code_amcsd 0018951 5.8457 8.8286 13.1834 90 90 90 Cmcm atom x y z occ Ca 0 .3320 .25 .807 Sr 0 .3320 .25 .193 Al .25 .25 0 Si 0 .9820 .1365 O1 0 .044 .25 O2 .272 .381 .1143 O3 0 .136 .070 OH4 0 .640 .051 Wat5 0 .627 .25