Citation: Ercit, T. S.; Cooper, M. A.; Hawthorne, F. C. (1998). The crystal structure of vuonnemite, Na11TiNb2(Si2O7)2(PO4)2O3(F,OH), a phosphate-bearing sorosilicate of the lomonosovite group. The Canadian Mineralogist, 36, pp. 1311-1320.
Formula: Na11 Nb2 O26 P2 Si4 Ti2
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Nb2 O26 P2 Si4 Ti2 (Nb O13 P Si2 Ti)
Multiplicity: 1