frameworksilicate
Framework silicates, also known as tectosilicates, are defined by a three-dimensional framework built from SiO4 tetrahedra in which each tetrahedron shares all four oxygen atoms with adjacent tetrahedra. This complete polymerization produces a rigid, extended Si–O network that runs throughout the mineral structure.
In many framework silicates aluminum can substitute for silicon in the framework. Because aluminum introduces a
Common members include quartz (SiO2), which contains a pure silica framework; feldspars, comprising potassium feldspar, plagioclase
Framework silicates dominate the Earth’s crust, especially feldspars and quartz. They have broad industrial relevance: quartz