AM_Titanite_78 Formula: (Ca.9 Na.1) (Ti.9 Nb.1) Si O5 Name: Titanite Unit cell: 7.0815 8.7175 6.575 90.0 113.853 90.0 , V=371.23 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: NaNb1