AM_Na(NaMn)7Mn22(PO4)18_05H2O Formula: Mn23.52 Na5.81 P18 O72.48 H6 Name: Na(NaMn)7Mn22(PO4)18*0.5H2O Unit cell: 15.2741 15.2741 43.334 90.0 90.0 120.0 , V=8755.29 Space group: R11-3 (1)

Keller P , Hatert F , Lissner F , Schleid T , Fransolet A M , European Journal of Mineralogy , 18 (2006) p.765-774, Hydrothermal synthesis and crystal structure of Na(NaMn)7Mn22(PO4)18*0.5H2O,, a new compund of fillowite structure type