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: Ca1.4 F2 Fe0.065 Mg0.3 Mn0.68 Na8.74 Nb0.19 O21 P3 Si2 Sr0.03 Ti1.41 Zr0.185
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ca8 F4 Fe2 Mg4 Mn10 Na8 Nb2 O42 P6 Si4 Sr2 Ti4 Zr4 (Ca4 F2 Fe Mg2 Mn5 Na4 Nb O21 P3 Si2 Sr Ti2 Zr2)
Multiplicity: 1