Dmisteinbergite Dimitrijevic R, Dondur V, Kremenovic A Zeolites 16 (1996) 294-300 Thermally induced phase transformations of Ca-exchanged LTA and FAU zeolite frameworks: Rietveld refinement of the hexagonal CaAl2Si2O8 diphyllosilicate structure Locality: synthetic _database_code_amcsd 0019481 5.1175 5.1175 14.7716 90 90 120 P6_3/mcm atom x y z occ Biso Ca 0 0 0 .4 Si 1/3 2/3 .1403 .5 .5 Al 1/3 2/3 .1403 .5 .5 O1 1/3 2/3 .25 2.1 O2 .387 0 .0974 2.04