Fluormayenite Williams P P Acta Crystallographica B29 (1973) 1550-1551 Refinement of the structure of 11CaO*7Al2O3*CaF2 Locality: synthetic _database_code_amcsd 0019954 11.97 11.97 11.97 90 90 90 I-43d atom x y z occ Biso Ca1 .1103 0 .25 .74 .57 Ca2 .0682 0 .25 .28 .35 Al1 .375 0 .25 .19 Al2 .2306 .2306 .2306 .27 O1 .1919 .2857 .0991 .80 O2 .3139 .3139 .3139 .80 F .875 0 .25 .33 2.20