“…This is why in numerous studies the name of the sedimentation host rock is mentioned, namely "volcanic tuffs" or "zeolite tuffs" (Can et al, 2010;Capasso et al, 2005Capasso et al, , 2007Dakovi c et al, 2010;D avila-Jiménez et al, 2008;Díaz-Nava et al, 2009;Flint and Selker, 2003;García-Mendieta et al, 2009;Gutiérrez-Segura et al, 2009;Krestou et al, 2003;Marañ on et al, 2006;Mustafa et al, 2010;Rajic et al, 2009;Trgo and Peri c, 2003;Trgo et al, 2006). Three types of rocks can be differentiated in function of the main process types involved in the formation of the mineral aggregates, namely: magmatic, sedimentation, and metamorphic.…”