THE THERMOCHEMICAL INVESTIGATION OF NATURAL LEUCITE

Abstract

Research was carried out to study the enthalpy of formation of natural leucite using the method of high temperature calorimetry. A study was also made of the phase transition in this mineral using the method of Calve microcalorimetry. The research was carried out using natural leucite from Orvieto in Italy. It was concluded that the transition of leucite from the low temperature to the high temperature modification occurs in the interval 910-931 K.