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Comparative Evaluation of Geochemical Methods of Searches for Secondary Dispersion Halos in Complex Landscape-Geochemical Conditions of Eastern Transbaikal
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Engineering and Mining Geophysics 2021, Apr 2021, Volume 2021, p.1 - 10
Abstract
A typical lithogeochemical survey with bulk analysis of samples is an important component of a complex of prospecting works in open areas, especially in dissected mountain areas with widespread development of thin eluvial-deluvial sediments. typical LGH often leads to the omission of ore objects in semi-closed and especially closed areas. Now, there are a number of methods of geochemical surveying, based not on the hypergene destruction of ore bodies that have emerged on the day surface, but on the diffusion of salt and gas components, including metal vapors, filtration and electrochemical transfer processes. This work presents a comparative evaluation of two geochemical methods MMI and a typical LGH, carried out in the area of Eastern Transbaikalia, characterized by complex landscape-geochemical conditions. As a result of comparing the two methods, we can say that the MMI method confidently identifies secondary scattering halos of Au, Ag, Cu and other indicator elements of the ore association. The intensity of the anomalies localized by the MMI method significantly exceeds the intensity of the anomalies of the elements of the ore association, localized according to the results of a typical lithogeochemical survey. All this makes it possible to judge the higher search efficiency of the MMI method in unfavorable landscape and climatic conditions.