L. I. Efanova
Institute of Geology of the Komi National Center of the Ural Branch of the RAS (FTC Institute of Geology Komi SC UB RAS)
Russian Federation

Candidate of Geological and Mineralogical Sciences, Senior Geologist

T. P. Mayorova
Institute of Geology of the Komi National Center of the Ural Branch of the RAS (FTC Institute of Geology Komi SC UB RAS); Pitirim Sorokin Syktyvkar State University (P. Sorokin Syktyvkar State University)
Russian Federation

Candidate of Geological and Mineralogical Sciences, Senior Researcher

K. G. Parhacheva
Institute of Geology of the Komi National Center of the Ural Branch of the RAS (FTC Institute of Geology Komi SC UB RAS)
Russian Federation

Junior Researcher, Ph. D. Student