Chlormayenite Boysen H, Lerch M, Stys A, Senyshyn A Acta Crystallographica B63 (2007) 675-682 Structure and oxygen mobility in mayenite (Ca12Al14O33): a high-temperature neutron powder diffraction study Locality: synthetic Sample: T = 1223 K _database_code_amcsd 0009966 12.0449 12.0449 12.0449 90 90 90 I-43d atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ca .1452 0 .25 .942 .0410 .054 .039 .030 0 0 -.0002 Ca' .211 0 .25 .058 .017 Al1 .0185 .0185 .0185 .0200 .0200 .0200 .0200 -.0024 -.0024 -.0024 Al2 .875 0 .25 .0219 .018 .0241 .0241 0 0 0 O1 .78787 .10043 .30624 .0363 .0400 .0332 .0357 .0239 .0146 .0037 O2 -.06386 -.06386 -.06386 .0375 .0375 .0375 .0375 -.0109 -.0109 -.0109 O3 .375 0 .25 .116 .14