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 = 410 K _database_code_amcsd 0001767 5.851 8.799 13.136 90 90 90 Cmcm atom x y z Biso Ca 0 .33330 .25 .866 Al .25 .25 0 .422 Si 0 .98045 .13297 .408 O1 0 .0492 .25 .76 O2 .27274 .37907 .11683 .684 O3 0 .13763 .06521 .561 O4 0 .63952 .04797 .729 O5 0 .6097 .25 1.91 Hw 0 .661 .199 4.1 Hh 0 .563 .056 6.6