Citation: Lussier, A. J.; Hawthorne, F. C.; Abdu, Y. A.; Ball, N. A.; Tait, K. T.; Back, M. E.; Steede, A. H.; Taylor, R.; McDonald, A. M. (2015). Ferro-ferri-nyboite, NaNa2(Fe2+3Fe3+2)Si8O22(OH)2, a new clinoamphibole from Mont Saint-Hilaire, Quebec, Canada: description and crystal structure. The Canadian Mineralogist, 52, pp. 1019-1026.