AM_Vivianite
Formula: Fe3 P2 O16 H16
Name: Vivianite
Unit cell: 10.08 13.43 4.7 90.0 104.5 90.0 , V=615.99
Space group: C12/M1 (12)

Mori H , Ito T , Acta Crystallographica , 3 (1950) p.1-6, The structure of vivianite and symplesite, Locality: Ashio, Japan