tectosilicates

Framework silicates, or tectosilicates, have tetrahedra that share all four corners.

Tectosilicates, also known as framework silicates, have the highest degree of polymerization.

This group of minerals consists of framework tectosilicates.

The facies is named for zeolites, strongly hydrated tectosilicates.

Note that tectosilicates can only have additional cations if some of the silicon is replaced by a lower-charge cation such as aluminium.

It is part of the feldspar group of tectosilicates, and is considered a barium-rich potassium feldspar.

In tectosilicates (framework silicates) each oxygen ion is shared between two tetrahedra, linking all the tetrahedra together to form a framework.