Feldspar
Feldspar is a group of crystalline minerals that predominantly consist of aluminium silicates
along with either potassium, sodium, barium or calcium. Feldspar is the most abundant
mineral group as they form over 60% of terrestrial rocks.
Its abundance is so high that the
classificaion of many rocks is based on their feldspar content. The industrial application of
Feldspar is driven by the alumina and alkali content. They are used as fluxing agents in
ceramics and glass industries and also as essential fillers in plastics, rubber, adhesive and
paint industries