Feldspars and feldspar mining plant | Stone Crusher used ...
· Feldspar Feldspars are aluminosilie minerals consisting different components of potassium, sodium and calcium in a solid solution series. It is the richest mineral group, constituting about 60% of the Earth's crust. The most common economic concentrations occur in pegmatites. Most commercial varieties are alkali feldspars, with composition between sodium and potassium end .