Abstract
Technogenic mineral formations of rare metal production in Eastern Kazakhstan, formed within the Central Kalba region, are examined. A brief description of the region's geological location and the history of rare metal pegmatite processing are provided. The main tailings dams of the Belogorsk Mining and Processing Plant, their morphology, volumetric parameters, and mineral composition are described. The presence of residual concentrations of tantalum, niobium, tin, beryllium, and lithium in the tailings is established. It is shown that the technogenic formations retain their metal content due to process losses during historical ore processing. A conclusion is drawn regarding the feasibility of further evaluation of the tailings dams as a potential source of secondary rare metal raw materials.