Incongruent Melting Of Potassium Feldspar

Incongruent melting of potassium feldspar billitin hydrothermal melting behavior of kalsi3os as , vapor solubility of potassium feldspar components is greater than that of albite components at these pressures, and the univariant nature of the melting curve may be lost at i 5 kbar because ofincongruent solubility in the vapor phasenline.