Citation: Fleet, M. E.; Pan, Y. (1995). The structure of NaCa2LuSi2O7F2, a synthetic phase of the cuspidine group. The Canadian Mineralogist, 33, pp. 879-884.
Formula: Ca2 F2 Lu Na O7 Si2
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ca8 F8 Lu8 O28 Si8 (Ca2 F2 Lu2 O7 Si2)
Multiplicity: 1