AM_Fillowite Formula: Mn35.6 Ca4.66 Fe8.02 Na11.72 P36 O144 Name: Fillowite Unit cell: 15.282 15.282 43.507 90.0 90.0 120.0 , V=8799.34 Space group: R11-3 (1)

Araki T , Moore P B , American Mineralogist , 66 (1981) p.827-842, Fillowite, Na2Ca(Mn,Fe)7(PO4)6: Its crystal structure