AM_Ludlamite Formula: Fe3 P2 O12 H8 Name: Ludlamite Unit cell: 10.45 4.65 9.25 90.0 90.0 90.0 , V=449.48 Space group: P121/A1 (14)

Ito T , Mori H , Acta Crystallographica , 4 (1951) p.412-416, The crystal structure of ludlamite, Locality: Ashio, Japan