1. Saint-Petersburg Mining University, 21 liniya VO 2, St. Petersburg, 1991096 Russia; kuzmin.kuvanechka@yandex.ru
2. Saint-Petersburg Mining University, 21 liniya VO 2, St. Petersburg, 1991096 Russia
3. Institute of Geology and Mineralogy SB RAS, pr. Akademika Koptyuga 3, Novosibirsk, 630090 Russia
4. Institute of Experimental Mineralogy RAS, ul. Akademika Osip’yana 4, Chernogolovka, Moscow oblast, 142432 Russia