V. K. Laperdin
Institute of the Earth's Crust, Siberian Branch of RAS
Russian Federation

Laperdin, Valery K., Doctor of Geology and Mineralogy, Senior Researcher

128 Lermontov street, Irkutsk 664033, Russia

V. A. Sankov
Institute of the Earth's Crust, Siberian Branch of RAS; Irkutsk State University
Russian Federation

Sankov, Vladimir A., Candidate of Geology and Mineralogy, Head of Laboratory

128 Lermontov street, Irkutsk 664033; 
3 Lenin street, Irkutsk 664003, Russia

A. A. Dobrynina
Institute of the Earth's Crust, Siberian Branch of RAS; Geological Institute, Siberian Branch of RAS
Russian Federation

Dobrynina, Anna A., Candidate of Physics and Mathematics, Senior Researcher

128 Lermontov street, Irkutsk 664033;
6a Sakhyanova street, Ulan-Ude 670047, Russia