AM_Alluaudite_7 Formula: Na1.738 Mn Fe1.964 P3 O12 Name: Alluaudite Unit cell: 11.944 12.56 6.48 90.0 114.52 90.0 , V=884.44 Space group: C12/C1 (15)

Hatert F , Rebbouh L , Hermann R P , Fransolet A M , Long G J , Grandjean F , American Mineralogist , 90 (2005) p.653-662, Crystal chemistry of the hydrothermally synthesized, Na2(Mn1-xFe2+x)2Fe3+(PO4)3 alluaudite-type solid solution, Sample: Na2MnFe2+Fe3+(PO4)3 (x = 0.50)