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The genetic characteristics of development and placement uranium-thorium mineralization and distribution of their concentrations in Azov megablock areas are examined. The main structures of Azov megablock areas controlling of distribution of metasomatic types and ore occurrence related with them are set. Preliminary basis for the allocation of boundaries and areas of ore districts is created. Considered theoretical and practical problem associated with the establishment of regional characteristics, genetic types of mineralization, its structural and temporary accommodation, the development of search criteria and characteristics of mineralization, the release of potentially mineralized areas and study areas of prospecting for Azov megablock of Ukrainian shield. The research is based on data on the geological structure of the PM, and the structural control of the placement lithochemical uranium and thorium anomalies occurrences and deposits, typomorphic properties of minerals, the phase distribution of uranium, thorium. Distribution of uranium and thorium mineralization in areas considered structure is: own minerals, isomorphic impurity in minerals associated with them, or turn on the first to the last. Uranium and thorium PM mineralization is characterized by a genetic (paragenetic) involving mineral associations exogenous and metasomatic rocks.