Feldspars are aluminosilicates. Their fusibility and purity make them a useful raw material with many industrial applications. The geological context specific to each deposit gives the feldspars a variety of physical and chemical properties, thus providing products for a full-range of ceramic and glass-making applications.
as fluxing agents in the production of ceramics, where they play a vital role in the firing of tiles, sanitaryware, tableware and glazes.
in glass-making, where they provide the aluminium that enhances the strength and transparency of hollow glass, flat glass, and glass wool.
as fillers in paints, plasters, insulation etc