1. Department of regional geology St. Petersburg State University, St. Petersburg, Russia
2. Geological Institute of RAS, Moscow, Russia
3. Diamond and Precious Metal Geology Institute, Siberian Branch, Russian Academy of Sciences, Yakutsk, Russia
4. ArcGeoLink Limited, Caterham, UK
5. Institute of the Earth’s Crust, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia