Phase Equilibria in the Cristobalite, Tridymite and Pyroxene Primary Phase Fields in the MgO-“FeO”-SiO₂ System in Equilibrium with Metallic Iron

Abstract

Experimental studies have been carried out to determine the phase equilibria for the ternary MgO-“FeO”-SiO₂ in equilibrium with metallic iron. Liquidus isotherms have been determined in the temperature range from 1578 to 1898K in the silica and pyroxene primary phase fields using high temperature equilibration, modified quenching and electron probe X-ray microanalysis (EPMA) techniques.