Lawsonite Libowitzky E, Armbruster T American Mineralogist 80 (1995) 1277-1285 Low-temperature phase transitions and the role of hydrogen bonds in lawsonite Sample: T = 295 K _database_code_amcsd 0001766 5.847 8.790 13.128 90 90 90 Cmcm atom x y z Biso Ca 0 .33321 .25 .694 Al .25 .25 0 .341 Si 0 .98043 .13300 .348 O1 0 .0496 .25 .64 O2 .27263 .37884 .11693 .583 O3 0 .13758 .06497 .470 O4 0 .63922 .04793 .645 O5 0 .6093 .25 1.56 Hw 0 .660 .199 3.9 Hh 0 .559 .054 7.1