AM_Leucophanite_1 Formula: Ca3.94 Ce.12 Nd.09 La.06 Pr.03 Na3.76 Be4 Si8 O24.54 F3.46 Name: Leucophanite Unit cell: 7.417 7.398 9.986 90.0 90.0 90.0 , V=547.94 Space group: P1 (1)

Cannillo E , Giuseppetti G , Mazzi F , Tazzoli V , Zeitschrift fur Kristallographie , 202 (1992) p.71-79, The crystal structure of a rare earth bearing leucophanite:, (Ca,RE)CaNa2Be2Si4O12(F,O)2, Locality: Mt Saint Hilaire, Quebec, Canada