AM_Calciobetafite Formula: (Ca1.37 Na.152 Th.078 U.078 Ce.322) (Ti1.07 Nb.892 Ta.038) O6.5 F.5 Name: Calciobetafite Unit cell: 10.2978 10.2978 10.2978 90.0 90.0 90.0 , V=1092.03 Space group: FD3M (227)

Mazzi F , Munno R , American Mineralogist , 68 (1983) p.262-276, Calciobetafite (new mineral of the pyrochlore group) and related minerals from