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 #AU83
Locality: synthetic
_database_code_amcsd 0018936
5.3025 13.174 5.8422 90 123.72 90 P2_1/m
atom    x     y    z occ
Ca   .340   .75 .671 .77
Sr   .340   .75 .671 .23
Al1    .5     0    0
Al2    .5     0   .5
Si   .966 .1324 .983
O1   .926   .75 .957
O2   .760  .115 .653
O3   .765  .388 .106
O4   .278  .068 .143
OH5  .275  .054 .633
Wat6 .764   .75 .358