AM_Aenigmatite_4 Formula: Fe4.759 Mg.327 Ti Na1.871 Ca.129 Si5.914 O20 Name: Aenigmatite Unit cell: 10.415 10.84 8.931 105.107 96.61 125.398 , V=746.78 Space group: P-1 (2)
Grew E S , Halenius U , Pasero M , European Journal of Mineralogy , 20 (2008) p.983-991, The crystal-chemistry of aenigmatite revisited: electron microprobe data,, structure refinement and Mossbauer spectroscopy of aenigmatite from, Vesteroya (Norway), Locality: Vesteroya, Vestfold District, Norway