AM_Perrierite-(Ce)
Formula: (Si3.84 Al.16) Ti3.48 Fe.87 Mg.24 Ca.872 Ce2.312 La.5 Y.16 Th.192 Na.312 O22
Name: Perrierite-(Ce)
Unit cell: 13.61 5.62 11.63 90.0 113.47 90.0 , V=815.96
Space group: C12/M1 (12)

Gottardi G , American Mineralogist , 45 (1960) p.1-14, The crystal structure of perrierite