Temperature interval of melt formation at crystalline substance heating. Bulletin of Moscow Society of Naturalists
Experimental investigation of fractions (1,5-2 mm and 0,1 mm - 2 nm) of alkaline feldspar, oligoclase, and quartz was carried out. The surface melting in all minerals begins at temperature950° C. The melting intensity is maximal for alkaline feldspar and minimal for quartz. The diﬀerence between surface melting temperature and volumetric melting temperature is some hundred degrees. The process of melting starts as from surface of grains as well as from debris surface, defects and dislocation crystalline structure of minerals.