Calzirtite Rossell H J Acta Crystallographica B38 (1982) 593-595 Calzirtite - A fluorite-related superstructure Locality: synthetic _database_code_amcsd 0019376 15.2203 15.2203 10.1224 90 90 90 *I4_1/acd 0 -.25 .125 atom x y z occ Biso Ca .3325 .5825 .125 .35 TiM1 .0120 .262 .125 .07 .35 ZrM1 .0120 .262 .125 .43 .35 TiM1 .1688 .4188 .125 .93 .35 ZrM2 .1688 .4188 .125 .07 .35 Zr -.0178 .5884 .1104 .35 O1 .0784 -.0079 -.0445 .35 O2 .0651 .1694 -.0044 .35 O3 .1114 .3323 .0013 .35 O4 .25 -.0362 0 .35 O5 .25 .1831 0 .35