AM_Normandite_1 Formula: (Ti.876 Nb.124) Mn.784 Ca.936 Na1.28 Si2 O8 F Name: Normandite Unit cell: 10.799 9.801 7.054 90.0 108.075 90.0 , V=709.76 Space group: P121/A1 (14)

Perchiazzi N , McDonald A M , Gault R A , Johnsen O , Merlino S , The Canadian Mineralogist , 38 (2000) p.641-648, The crystal structure of normandite and its crystal-chemical, relationships with lavenite, Locality: Mont Saint-Hilaire, Quebec, Canada