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.

The Rudny Altai belt of Kazakhstan, Russia, and China is a major volcanogenic massive sulfide (VMS) province of the Central Asian Orogenic Belt, hosting numerous Zn–Pb–Cu deposits within Devonian volcanic and volcano-sedimentary successions. This study in-tegrates geological and metallogenic data from 29 VMS deposits to quantify regional metal specialization and evaluate its relationships with stratigraphy and volcanic setting. Indi-vidual Zn/(Zn+Pb) values range from 0.56 to 0.93, whereas district means vary from 0.663 to 0.803, indicating a persistent regional Zn-rich tendency superimposed on substantial deposit-scale variability. Stratigraphic analysis demonstrates that mineralization occurs at several discrete Devonian lithochronological levels rather than along a single continuous ore-bearing horizon. Major deposits are commonly associated with felsic volcanic and volcano-sedimentary successions; however, variations in Cu/(Cu+Zn) and compiled δ³⁴S data demonstrate substantial deposit-scale variability in metal distribution. Comparison with major VMS provinces shows that Rudny Altai district-scale Zn/(Zn+Pb) values over-lap with reference values for the Bathurst district and Green Tuff Belt. The results define the Rudny Altai as a Zn–Pb–Cu-dominated VMS province characterized by a regional as-sociation between mineralization and felsic-bearing Devonian successions rather than a simple direct control of felsic magma composition on Zn enrichment. The proposed prov-ince-scale framework provides a quantitative basis for metallogenic comparison and iden-tification of favourable stratigraphic intervals for VMS exploration.