Siberian Federal University

The possibility of converting a glass batch of dunite rock and limestone to the X‑ray amorphous state in order to reduce the glass sintering temperature has been demonstrated. Optically transparent glass crystalline materials were synthesized under these conditions at a temperature of 1500 °C. The glasses were heat treated in a one‑step regime at different temperatures and times. The fused lanthanum‑doped glasses were studied by differential scanning calorimetry, X‑ray diffraction, electron microscopy, X‑ray fluorescence and spectral analysis. The peculiarities of the crystallization process of the glass crystalline materials obtained are shown. Several phases are detected during crystallization