Zirconolite Grey I E, Mumme W G, Ness T J, Roth R S, Smith K L Journal of Solid State Chemistry 174 (2003) 285-295 Structural relations between weberite and zirconolite polytypes - refinements of doped 3T and 4M Ca2Ta2O7 and 3T CaZrTi2O7 Locality: synthetic Sample: T = 123 K Note: polytype Zirconolite-3T _database_code_amcsd 0014037 7.228 7.228 16.805 90 90 120 P3_121 atom x y z occ Uiso CaM1 .8325 0 1/3 .840 .0071 ThM1 .8325 0 1/3 .040 .0071 ZrM1 .8325 0 1/3 .12 .0071 CaM2 .3342 0 1/3 .618 .0096 ThM2 .3342 0 1/3 .262 .0096 ZrM2 .3342 0 1/3 .12 .0096 ZrM3 .1647 .6633 .01782 .96 .0071 CaM3 .1647 .6633 .01782 .04 .0071 TiM4 .3291 0 5/6 .44 .0063 AlM4 .3291 0 5/6 .44 .0063 ZrM4 .3291 0 5/6 .12 .0063 TiM5 .9217 .050 .8319 .26 .016 ZrM5 .9217 .050 .8319 .06 .016 AlM5' .917 .110 .833 .18 .016 TiM6 .4995 .3323 .16426 .82 .0085 AlM6 .4995 .3323 .16426 .08 .0085 ZrM6 .4995 .3323 .16426 .10 .0085 O1 .600 .629 .1450 .019 O2 .007 .828 .0669 .012 O3 .526 .305 .0469 .007 O4 .192 .218 .1458 .012 O5 .525 .889 .0546 .009 O6 .939 .309 .0548 .008 O7 .211 .616 .1395 .015