AM_Ludlamite_2 Formula: Fe3 P2 O12 H8 Name: Ludlamite Unit cell: 10.541 4.638 9.285 90.0 100.728 90.0 , V=446.00 Space group: P121/A1 (14)

Abrahams S C , Journal of Chemical Physics , 44 (1966) p.2230-2237, Ferromagnetic and crystal structure of ludlamite, Fe3(PO4)2*4(H2O), at 4.2 K, Sample: T = 4.2 K