1. Institute of Geology and Mineralogy SB RAS; pr. Koptyug 3 Novosibirsk 630090 Russia
2. Department of Geological Sciences; University of Saskatchewan; Saskatoon SK S7N 5E2 Canada
3. Novosibirsk State University; Pirogov st., 2 Novosibirsk 630090 Russia
4. Kirensky Institute of Physics SB RAS; Krasnoyarsk 660036 Russia
5. Faculty of Physics; St. Petersburg State University; Ulyanovskaya st., 3 St. Petersburg 198504 Russia