The Kakhtarminsky potentially ore-bearing region (POR) in the Eastern Sayan is situated in the arrangement of the Herma-Kakhtarminsky tectonic ledge in the Lower Devonian volcanic rocks of the Agul depression. Precambrian metamorphic and igneous formations prevail in the structure of the protrusion. Its northern part is composed of Riphean and Paleozoic granitoids and gabbroids of the Berezovsky and Verkhnekrasninsky massifs, and the southern part is a fragment of the synclinal structure. The wings of this structure are presented by gneisses and schists, containing bodies of amphibolites and granulites. This fact allows to compare it with the gneisses and schists of the Archaean Khaylaminsky series of the Biryusinsky block. The nuclear (central) part of the synclinal structure is formed by the rocks of the lower Kuskunaksky series of the Karagansky complex. These rocks are also prevalent within the Kansky block. The sequence consists predominantly of amphibolite, amphibole and biotite gneisses, rarely marbles and quartzite. More than 20 bodies of ultramafic rocks are found in the nuclear part of the syncline and near it; they are classified as subvolcanic facies of ultramafic volcanics. The bodies have a linear, lens and ellipsoid shapes with the size of up to 4.0 sq.km on the surface. According to their morphology and size they are similar to the ore-bearing Kingashsky massif. High-magnesian dunites are also prevalent in their composition. Spots of sulphides are established in relatively large massifs. The zone of sulphide mineralization with nickel content from 0.19 to 0.4%, chromium up to 0.7%, platinum up to 1 g/t, palladium up to 0.5 g/t is identified in the area by geophysical methods. The ore bodies within the sulphide zone stretch along the surface in the first kilometers, and have up to one hundred meters of the apparent power. Taking into account the area of mineralized rocks and the content of the ore elements, forecast resources by category amounted to P2 are: nickel 1,000,000 tons, copper 30,000 tons, cobalt 6,000 tons, gold 38 tons, platinum 51 tons and palladium 25 tons. Geological-tectonic position, composition, petrochemical and geochemical characteristics of the Kakhtarminsky ultramafic rocks indicate their formation resemblance to the ore-bearing ultramafic rocks of the Kingashsky ore junction; and metamorphic sequences are correlated with the Idarsky greenstone belt of the Kansky and Biryusinsky blocks, containing the Kingashsky ore district. A number of direct forecasting and search features are established in the Kakhtarminsky POR that indicate the possibility of opening here a field of sulphide-nickel mineralization with the associated gold-platinum ore. There are findings of sperrylite from the alluvial streams draining ultramafic massifs, and on the binary diagrams most of the spots of the analysis of Kakhtarminsky dunites and peridotites almost coincide with the Kingashsky trend. Thus, these data allow us to consider the Kakhtarminsky POR as a new object of the East Sayan nickel-platinum province, promising to search for nickel sulphide with associated precious metals. A number of features allow forecasting the discovery of deposits of nickel of the Mount Cate type in the bodies of dunites. The presence of linear (band) massifs of ultramafic rocks does not preclude the discovery of sulphide nickel deposits with low-copper content of the Kambaldinsky type here due to the powerful series of volcanic ultramafites (komatiites). The authors recommend to perform a complex geophysical study, detailed searches, including the electrical prospecting and magnetometry, search routes and exploration wells with a corresponding set of testing on the territory of Kakhtarminsky POR.

The ore-bearing estimate of the Sayan-Yenisei fracture zone, delimiting horst-graben blocks and thrust plates of the Eastern Sayan and Yenisei ridge, is given in the article. The potential of this zone when exploring iron, titanium, vanadium, gold, platinum, uranium and other deposits is given grounds

Metallogenic peculiarities of the Late-Precambrian metamorphic series of the Predivinsky terrain laying as the thrust plate in the western part of the Angaro-Kansky protrusion of the Enisey range are examined. Authors grounded perspectives of this structure in prospecting primary and placer gold, ferruginous quartzites, copper, copper-nickel, titanomagnetite and uranium-gold-platinum ores.