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 #AU86
Locality: synthetic
_database_code_amcsd 0018937
5.3427 13.2039 5.8448 90 124.10 90 P2_1/m
atom     x     y     z occ
Ca   .3431   .75 .6772 .64
Sr   .3431   .75 .6772 .36
Al1     .5     0     0
Al2     .5     0    .5
Si    .966 .1332  .986
O1    .928   .75  .941
O2    .760 .1148  .661
O3    .778 .3915  .118
O4    .280 .0687  .142
OH5   .277 .0548  .633
Wat6  .770   .75  .349