AM_Ilimaussite-(Ce) Formula: Ce3.7 Fe1.6 Ba7.9 Na5.82 K3.42 Th.3 Nb3.72 Ti1.98 Sr.1 Si21 O88 H28 Name: Ilimaussite-(Ce) Unit cell: 10.77 10.77 61.05 90.0 90.0 120.0 , V=6132.64 Space group: R32 (155)

Ferraris G , Gula A , Zubkova N V , Pushcharovsky D Y , Gobetchiya E R , Pekov I V , Eldjarn K , The Canadian Mineralogist , 42 (2004) p.787-795, The crystal structure of ilimaussite-(Ce),, (Ba,Na)10K3Na4.5Ce5(Nb,Ti)[Si12O36][Si9O18(O,OH)24]O6,, and the ilimaussite problem