AM_Fluorbritholite-(Ce)_1 Formula: Si2.55 P.39 Na.5 Ca1.03 La1.47 Ce1.67 Pr.1 Nd.23 O12.12 F.88 H.12 Name: Fluorbritholite-(Ce) Unit cell: 9.682 9.682 7.066 90.0 90.0 120.0 , V=573.63 Space group: P63 (173)

Oberti R , Ottolini L , Della Ventura G , Parodi G C , American Mineralogist , 86 (2001) p.1066-1075, On the symmetry and crystal chemistry of britholite:, New structural and microanalytical data, Sample: LOS from Rouma Island, Guinea