AM_Titanite_80
Formula: Ca (Ti.8 Al.1 Nb.1) Si O5
Name: Titanite
Unit cell: 7.0571 8.7169 6.563 90.0 113.756 90.0 , V=369.52
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: AlNb1