The role of various geological factors in the formation of the demethanization zone is considered in a number of works. The main factors that determine the depth of distribution of the zone of gas weathering are noted - the history of the geological development of the basin, the angle of incidence of the coal-bearing strata, the presence, thickness and nature of the covering deposits; hydrogeological conditions.

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KoKTaSzhal ore fielD (CenTral KazaKhSTan) reSearCh reSulTS Purpose. Predictive assessment of promising mineralization points and ore occurrences of copper, gold, silver and associated components at the Koktaszhal ore field. Methodology. Analysis of literary and library materials. Reconnaissance routes to study the geological situation of the area. During the passage of the routes, samples were taken, their mineralogical study was carried out to determine the patterns of distri bution of the main ore minerals and impurities. To determine the contents of useful components, phase chemical analysis, spectral analysis, and spectrographic aurometric analysis were used. findings. The materials and their analysis obtained as a result of research significantly expand the idea of the ore field under study. The main oreforming minerals are chalcopyrite and bornite, in much smaller amounts chalcosine, pyrite, and molybdenite are present in the ores. The main oxidized copper minerals in decreasing order are malachite, chrysocolla, chalcanthite, azurite. Thanks to detailed geological, mineralogical, petrographic, and laboratory studies, promising copperporphyry ore occurrences have been identified. The aureole patterns are spatially combined and drawn up with the mapping of mineral concentrations on them, which are recommended to be studied in more detail. originality. According to the results of the research and analysis, new promising points of mineralization and metallizing pro cess were identified using the latest highprecision methods for studying oreforming minerals of copperporphyry deposits. Practical value. Studying the mineralogy of the ore field allows determining the typomorphic features of minerals for the search and evaluation of mineral deposits as well as improvement of the complexity of the use of raw materials. The use of mineralogical research methods at the current level increases the efficiency of exploration, helps to search for new promising areas and deposits and, in general, increases the mineral resource base of Kazakhstan, which is one of the most important tasks of developing coun tries. The results of the studies can serve as the basis for the subsequent further study of the ore field, quantitative assessment of the prospects of resources, the choice of mining and beneficiation methods. The additional study of littleknown copperporphyry ore occurrences, the search for new deposits of copper, gold, silver and associated components are the primary task of their industrial development in modern technologies.