1. Geological Institute, Russian Academy of Sciences, Moscow, Russia
2. College of Natural Science and Mathematics, University of Alaska Fairbanks, Fairbanks, AK, USA
3. V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow, Russia
4. V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Sciences, Novosibirsk, Russia
5. Department of Geology and Geophysics, Novosibirsk State University, Novosibirsk, Russia
6. Nuclear Regulation Authority, Tokyo, Japan