AM_Manganoneptunite Formula: Si8 Ti2 Fe2 Na2 K Li O24 Name: Manganoneptunite Unit cell: 16.4821 12.5195 10.0292 90.0 115.474 90.0 , V=1868.31 Space group: C1C1 (9)

Zolotarev A A , Krivovichev S V , Yakovenchuk V N , Zapiski Vserossijskogo Mineralogicheskogo Obshchetstva , 136 (2007) p.118-123, Refinement of the mangan-neptunite structure, Locality: synthetic, Note: changed signs of z-coordinates of O12 and O14, Ti1(y) to .32364