1. Faculty of Geology, Moscow State University, 119991 Moscow, Russia
2. Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources, The Russian Academy of Sciences, 111020 Moscow, Russia
3. Faculty of Chemistry, Moscow State University, 119991 Moscow, Russia
4. Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, 184209 Apatity, Russia
5. Institute of Spectroscopy RAS, 108840 Troitsk, Moscow, Russia