Feldspar Mineral with Alumina and Alkali Content is available as deposits of sodium feldspar and potassium feldspar. Feldspar Mineral has high amount of alumina and alkali content. Feldspar Mineral finds application in glass, ceramics, fillers, enamel, frits and glazes paint. Feldspar Mineral with Alumina and Alkali Content is also used in mild abrasives and welding electrodes.