AM_Phosphoferrite
Formula: Fe3 P2 O11 H6
Name: Phosphoferrite
Unit cell: 8.73 10.152 9.57 90.0 90.0 90.0 , V=848.16
Space group: PCMB (57)

Eversheim P , Kleber W , Acta Crystallographica , 6 (1953) p.215-216, Morphologie und struktur des reddingits, P2O5*3FeO*3H2O, Note: z(FeII) adjusted to match symmetry constraint