Itoigawaite 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 #Pt100 Locality: synthetic _database_code_amcsd 0018945 5.4231 13.2761 5.8583 90 124.42 90 P2_1/m atom x y z Sr .3456 .75 .6858 Al1 .5 0 0 Al2 .5 0 .5 Si .9657 .1305 .9908 O1 .940 .75 .931 O2 .768 .1104 .661 O3 .788 .3967 .127 O4 .289 .0722 .144 OH5 .291 .0567 .642 Wat6 .730 .75 .290