füllosilikaadid
Füllosilikaadid, also known as framework silicates, represent a major group of silicate minerals characterized by a three-dimensional framework of interconnected SiO4 tetrahedra. In these structures, all four oxygen atoms of each tetrahedron are shared with neighboring tetrahedra, forming a robust, open network. This unique arrangement results in minerals with generally high hardness and density.
The most prominent examples of füllosilikaadid are the feldspars, which are the most abundant mineral group