AM_Titanite_79 Formula: (Ca.8 Na.2) (Ti.8 Nb.2) Si O5 Name: Titanite Unit cell: 7.0952 8.7172 6.5824 90.0 113.982 90.0 , V=371.98 Space group: A12/A1 (15)

Liferovich R P , Mitchell R H , The Canadian Mineralogist , 44 (2006) p.1089-1097, Solid solutions of niobium in synthetic titanite, Sample: NaNb2