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Rare metals such as Sn, W, Ta, Nb, Li and rare earth elements are essential for modern technologies, renewable energy systems and advanced materials. Their growing demand increases the importance of studying rare-metal provinces and identifying new perspective areas. The Kalba–Narym belt in Eastern Kazakhstan is one of the main rare-metal regions of Central Asia. However, the potential of its south-eastern part remains insufficiently evaluated. This paper considers the Cherdoyak deposit as an example of greisenâ...