Nikolai S. Chebykin
Zavaritsky Institute of Geology and Geochemistry UB RAS, Ekaterinburg
Russian Federation

Ivan P. Sandalov
Plaurum АО "Ekaterinburg non-ferrous metals processing plant", Ekaterinburg
Russian Federation

Dmitry A. Zamyatin
Zavaritsky Institute of Geology and Geochemistry UB RAS, Ekaterinburg
Russian Federation

Sergey L. Votyakov
Zavaritsky Institute of Geology and Geochemistry UB RAS, Ekaterinburg
Russian Federation