AM_Vivianite_2
Formula: Fe3 P2 O16 H16
Name: Vivianite
Unit cell: 10.021 13.441 4.721 90.0 102.84 90.0 , V=619.98
Space group: I12/M1 (12)

Bartl H , Fresenius Zeitschrift fur Analytische Chemie , 333 (1989) p.401-403, Water of crystallization and its hydrogen-bonded crosslinking in vivianite