Patterns of beryllium distribution in rocks of Central Kazakhstan

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Authors:

V.S.Portnov, Dr. Sc. (Tech.), Prof., orcid.org/0000-0002-4940-3156, Karaganda State Technical University, Karaganda, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

A.N.Kopobayeva, orcid.org/0000-0002-0601-9365, Karaganda State Technical University, Karaganda, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

A.Amangeldikyzy, orcid.org/0000-0002-6665-8804, Karaganda State Technical University, Karaganda, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

N.S.Askarova, orcid.org/0000-0002-2103-6198, Karaganda State Technical University, Karaganda, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

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Abstract:

Purpose. To establish patterns of beryllium distribution in rocks to identify geochemically specialized rocks in order to improve the effectiveness of regional forecasting aimed at expanding the rare metal base of the country.

Methodology. It is based on systematic and mathematical analyses. The basis of the work laid on the system of regional clarkes of Central Kazakhstan, based on these data correlation graphs of interrelations of an element with oxides of various elements in rocks are constructed, by means of which features of Geochemistry of beryllium in geological formations are revealed.

Findings. On the basis of the analysis of distribution and established correlations of beryllium in rocks of Central Kazakhstan the geochemical regularities of its distribution in different types of rocks are determined and geochemically specialized rocks in relation to this element are revealed. The patterns of beryllium distribution and factors influencing its distribution in rocks of Central Kazakhstan are revealed. It is established that the terrigenous and metamorphic rocks with the highest content of SiO2 and K2O have higher average contents of Be compared to chemogenic ones. This indicates that the terrigenous rocks of the studied region are products of mechanical destruction of previously formed igneous rocks, and metamorphic rocks were formed by regional isochemical metamorphism. All the patterns characteristic of igneous rocks of Central Kazakhstan are characteristic of the products of their destruction and isochemical changes as well, which is determined by their geological position, namely, confined to the zones of erosion and destruction of the original rocks of geosynclines and spatial relationship with igneous rocks.

Originality. For the first time an analysis of the distribution of Be in the rocks of Central Kazakhstan was carried out on the basis of the developed system of regional clarkes and the laws of its distribution were established; for Be  geochemically specialized and potentially ore bearing rocks were identified . The regularities of beryllium distribution, typical for different genetic types of rocks, testifying to the processes of destruction of parent rocks and accumulation of sedimentary rocks in geosynclinal structures are also determined.

Practical value. Consists in the fact that in the general system chain of metallogenic forecasting and searches, the established data on the geochemical specialization of geological formations in relation to beryllium will allow the formational interpretation of anomalous geochemical fields detected during the multi-purpose geological and geochemical mapping;  zoning of the studied areas by types of geological formations possessing one or another potential ore content with the release of the most productive subformations; giving quantitative estimates of forecast resources.

References.

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