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Abstract
The purpose of the paper is to determine the crystallization order of rocks based on the study of the mineralogical and petrographic composition of the Khentei Range Cenozoic basaltoids. Methods. A microprobe X-ray spectral analysis by means of the JXA-8200 tool (JEOL Ltd., Japan) has been used in the study. Results. The research results in the determination of chemical compositions of rock-forming minerals and the sequence of minerals formation. Conclusions. Melt movement to the surface was accompanied with the capturing of mantle xenoliths. Olivine and pyroxene of the first generation were formed first, then, olivine and pyroxene of the second generation were formed, as well as oxide bearing minerals. Plagioclase, potassium feldspar, nepheline and leucite were crystallized last from the interstices. The presence of residual glass has also been noticed in the interstices.
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Schedule a callMore From: Proceedings of the Siberian Department of the Section of Earth Sciences of the Russian Academy of Natural Sciences. Geology, Exploration and Development of Mineral Deposits
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