A. V. Spirina
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the RAS; Academy of Engineering, Peoples’ Friendship University of Russia
Russian Federation

Adelina V. Spirina — postgraduate student of the Engineering Academy of the Peoples’ Friendship University of Russia, research assistant at the Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences. SPIN: 9091-7634

35, Staromonetny lane, Moscow 119017
6, Miklukho-Maklay str., Moscow 117198 

V. V. Makarov
Uchaly mining and processing plant
Russian Federation

Veniamin V. Makarov — chief geologist of the Uchaly underground mine

2, Gornozavodskaya str., Uchaly 453700

I. B. Moiseev
Uchaly mining and processing plant
Russian Federation

Igor B. Moiseev — chief geologist

2, Gornozavodskaya str., Uchaly 453700

I. V. Vikentyev
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the RAS; Academy of Engineering, Peoples’ Friendship University of Russia
Russian Federation

Ilya V. Vikentyev — Dr. of Sci. (Geol.-Min.), principal researcher at the Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences; Professor of the Engineering Academy of the Peoples’ Friendship University of Russia. SPIN: 2456-3030

35, Staromonetny lane, Moscow 119017
6, Miklukho-Maklay str., Moscow 117198