Example of most abundant  three-dimensional silicate is ____?

The Feldspars are most abundant Alumino Silicate minerals in the Earth surface. The silicon atoms and aluminium atoms occupy the centres of interlinked. Tetrahedra of SiO4-4 and AiO4-5 . These tetrahedrals connect at each corner to other tetrahedral forming an intricate three dimensional , negatively charged frame work. The sodium cations sit with in the voids in this structure.Zeolites and ultramarines are alumina silicates.Beryl is a beryllium alumna silicate.