APPLICATION OF SENTINEL-2 SPECTRAL INDICES FOR REMOTE MAPPING OF ORE MINERALIZATION IN THE DEPOSITS OF EAST KAZAKHSTAN

https://doi.org/10.48498/minmag.2026.250.2.005

The paper discusses the application of Sentinel-2 multispectral data for remote mapping of ore mineralization within the open pit and waste dumps of the Nikolaevsk deposit, the underground workings and dumps of the Artemyevsk deposit, and the tailings facility of the Nikolaevsk processing plant. The aim is to assess the potential of integrated spectral index analysis for identifying mineralization within surface and underground mining areas of the largest polymetallic deposits in the Shemonaikha ore zone. A median composite for 2022–2023 was generated, and NDVI, Clay, Ferrous, Alunite, Brightness, and BSI indices were calculated. After normalization, a spectral anomaly map was produced and compared with mining contours and technogenic formations. High Clay, Alunite, and Ferrous values correspond to hydrothermal-metasomatic alteration zones.

O.D. Gavrilenko, Zh.T. Bagasharova, G.D. Berkinbayev, *D.R. Nazyrova