AM_Graftonite_1
Formula: (Fe1.5 Mn1.5) P2 O8
Name: Graftonite
Unit cell: 8.81 11.37 6.155 90.0 99.07 90.0 , V=608.84
Space group: P121/C1 (14)

Nord A G , Ericsson T , American Mineralogist , 67 (1982) p.826-832, The cation distribution in synthetic (Fe,Mn)3(PO4)2 graftonite-type solid, solutions