performed under financial support of Integration Program No. 0341-2016-001;Russian Foundation for Basic Research Projects 15-05-02772a and 18-05-00439a with research equipment isotope-geochemical studies at IGC SB RAS
Quartzites are widespread within Earth's lithosphere, but their highly pure varieties occur quite infrequently. With the development of alternative energy sources, including solar, and with increasing demand for high-...