Affiliation: | 1.Syktyvkar State University, Oktjabrskij prospect, 55, 167001, Syktyvkar, Komi Republic, Russia ;2.Institute of Geology of the Komi Science Center UB RAS, Pervomayskaya st. 54, 167982, Syktyvkar, Komi Republic, Russia ;3.Institute of Chemistry of the Komi Science Center UB RAS, Pervomayskaya st. 48, 167982, Syktyvkar, Republic of Komi, Russia ;4.Department of Crystallography, Institute of Earth Sciences, Saint Petersburg State University, University Emb. 7/9, 199034, St. Petersburg, Russia ; |