Citation: Chakhmourdian, A. R.; Cooper, M. A.; Ball, N.; Reguir, E. P.; Medici, L.; Abdu, Y. A.; Antonov, A. A. (2014). Vladykinite, Na3Sr4(Fe2+Fe3+)Si8O24: A new complex sheet silicate from peralkaline rocks of the Murun complex, eastern Siberia, Russia. American Mineralogist, 99, pp. 235-241.