THE BEST SIDE OF FELDSPAR LITHIC SANDSTONE

Petalite has the best Li2O/Al2O3 ratio among all-natural minerals. It may also be a precious flux additive as it will increase their resistance to heat shock. Petalite by itself contains a around-zero coefficient of thermal enlargement at about 700 °C and is also a beneficial ingredient of mineral alloys on account of its thermal properties [9,ten