Rare earth elements in mine, slime, and river waters in the Kavalerovsky and Dalnegorsky districts of the Russian Far East

摘要

The concentrations of rare earth elements (REEs) in anthropogenic (mine and slime) and river waters of Kavalerovsky and Dalnegorsky districts of the Far East have been estimated. The highest concentrations of REs have been found in mine water of the Dubrovskoe deposit (Kavalerovsky district), especially in the slime waters of the old tailing dump of the Krasnorechenskaya ore-dressing plant (KODP, Dalnegorsky district). Contamination of the Rudnaya river water has been detected in the vicinity of the KODP old and new tailings dumps. Taking into account that REEs are concomitant with sulfide minerals, the former can be extracted by repeated processing of wastes from the KODP old and new tailings dumps.