AM_Zirconolite_2 Formula: Ca1.538 Th.302 Zr2.6 Ti2.6 Al.96 O14 Name: Zirconolite Unit cell: 7.228 7.228 16.805 90.0 90.0 120.0 , V=760.34 Space group: P3121 (152)

Grey I E , Mumme W G , Ness T J , Roth R S , Smith K L , Journal of Solid State Chemistry , 174 (2003) p.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