1. Gramberg Institute for Geology and Mineral Resources of the World Ocean (VNIIOkeangeologia), English Ave., 1, 190121 St. Petersburg, Russia
2. Department of Mineralogy, Crystallography, and Petrography, Saint-Petersburg Mining University (SPMU), 21 Line, 2, 199106 St. Petersburg, Russia
3. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences (IPGG RAS), Makarov Emb., 2, 199034 St. Petersburg, Russia