Citation: Sokolova, E.; Hawthorne, F. C.; Khomyakov, A. P. (2005). Polyphite and sobolevite: Revision of their crystal structures. The Canadian Mineralogist, 43, pp. 1527-1544.
Formula: Ca1.63 F3 Fe0.1 Mg0.41 Mn1.02 Na13.62 Nb0.51 O33 P4 Si4 Sr0.03 Ti2.42 Zr0.09
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ca4 F8 Fe4 Mg8 Mn8 Na4 Nb8 O68 P8 Si8 Ti8 Zr4 (Ca F2 Fe Mg2 Mn2 Na Nb2 O17 P2 Si2 Ti2 Zr)
Multiplicity: 1