Geochemical features of soils from the Mid-Ural ore deposit Ekaterina Dziuba, Dmitriy Andreev, Sergey Buzmakov and Yuliya Khotyanovskaya E3S Web Conf., 169 (2020) 01014 Published online: 19 May 2020 DOI: 10.1051/e3sconf/202016901014