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 0018935 5.3300 13.1956 5.8449 90 123.96 90 P2_1/m atom x y z occ Ca .3409 .75 .6721 .680 Sr .3409 .75 .6721 .320 Al1 .5 0 0 Al2 .5 0 .5 Si .962 .1314 .979 O1 .929 .75 .947 O2 .764 .116 .653 O3 .779 .3862 .115 O4 .291 .0660 .146 OH5 .282 .0535 .638 Wat6 .774 .75 .352