4 OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
4.D Metal:Oxygen = 1:2 and similar
4.DH With large (± medium-sized) cations; sheets of edge-sharing octahedra
4.DH.30 Zirconolite-3O (Ca,Fe,Y,Th)2Fe(Ti,Nb)3Zr2O7
Space Group C mca
Point Group 2/m 2/m 2/m
4.DH.30 Zirconolite-3T CaZrTi2O7
Space Group P 312
Point Group 3 2
4.DH.30 Zirconolite-2M CaZrTi2O7
Space Group C 2/c
Point Group 2/m
4.DH.30 Zirconolite (Ca,Ce)Zr(Ti,Nb,Fe+++)2O7
Point Group None