1. Institute of Volcanology and Seismology, Far Eastern Branch of the Russian Academy of Sciences, bul’v. Piipa 9, Petropavlovsk-Kamchatsky, 683006, Russia
2. Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 119017, Russia
3. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 119991, Russia
4. Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017, Russia