Feldspar, SiO2 % : 66% - 69%

Feldspar is an abundant rock-forming mineral
typically occurring as colourless or palecoloured
crystals and consisting of aluminosilicates
of potassium, sodium, and calcium.
The features include
 Good dispersibility
 High chemical inertness
 Stable pH
 High resistance to abrasion
 Resistant to frosting
 Fluxing agent
 Glass industry — reduces the
melting point and control the
viscosity of glass.
 Ceramics — main fluxing agent
 Fillers and Extenders — paints, plastics
and rubber.
 Assists the enamel composition of
enamel frits and glazes, assuring the
absence of defects and the neatness
of the end product.