Citation: Perchiazzi, N.; McDonald, A. M.; Gault, R. A.; Johnsen, O.; Merlino, S. (2000). The crystal structure of normandite and its crystal-chemical relationships with lavenite. The Canadian Mineralogist, 38, pp. 641-648.
Formula: Ca0.83 F Mn Na1.17 O8 Si2 Ti0.612 Zr0.388