Geologicheskii Vestnik

For the first time, for the platform Vendian deposits, along with lithological and petrographic methods of studying rocks in sections and quantitative mineralogical analysis of the heavy fraction of concentrate, a study was carried out by scanning electron microscopy in thin sections. The use of scanning electron microscopy made it possible to significantly refine the mineral composition of rock-forming, secondary and accessory minerals. For the first time, it was indicated that the sandstones have their own minerals of rare earth elements (monazite and xenotime) and thorium (torite), and some geochemical features of REE concentrator minerals (apatite and zircon) have been identified. Additional information on the mineral and geochemical composition of the rocks of the Salikhov Formation can be used in the future to reconstruct the composition of the feeding provinces and the conditions for the formation of sedimentary paleobasins.

Vendian, Salikhovo formation, mineralogy, sandstones, well, platform, Shkapovo-Shikhan depression

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