ORE-BEARING OF THE VORONIVSKA, VOLKIVSKA, NOSACHIVSKA SITES OF PHOSPHATE-TITANIUM ORES OF THE KORSUN-NOVOMYRHOROD PLUTON AND SPATIAL DISTRIBUTION OF ILMENITE IN THEIR CRUST OF WEATHERING

Abstract

Information is provided on the phosphate-titanium ore content of crystalline rocks of the basement of the Voronivska, Volkivska, Nosachivska, Ternivska areas and the ilmenite content of the weathering crust, which are located in the central part of the Korsun-Novomyrhorod pluton within the Horodyshchenskyi, Smilyanskyi, Ternivskyi gabbro-anorthosite massifs. Based on the attribute database, which includes the coordinates of the drill holes, their description and testing results, cartographic constructions (maps, columns) were created that reflect the relief of the roof, the relief of the sole, the thickness of the weathering crust, the lateral distribution of the average ilmenite content in the weathering crust and the vertical distribution of its content in the wells of the specified ore occurrences of titanium ores. The direction and strength of correlations between the relief of the roof and the relief of the sole of the eluvium, the relief of the roof (sole) and the thickness of the eluvium, the relief of the roof (sole) and the average content of ilmenite in the eluvium were investigated. Based on the indicators obtained by production geologists during exploration and exploration and appraisal works within the Voronivska, Volkivska, Nosachivska and Ternivska areas, we conducted a rating assessment of phosphate-titanium ores in crystalline basement rocks. According to the assessment results, the areas were ranked in the following order (from highest to lowest rating): Nosachivska (Nosachivske deposit), Voronivska and with the same rating assessment Volkivska and Ternivska. Based on the structural and material indicators of the weathering crust (average depth and thickness of ore layers; weighted average ilmenite content; TiO2 content in ilmenite; forecast area; forecast TiO2 resources), a rating assessment of the studied objects was carried out. According to the results of the rating assessment (from lowest to highest), the ore occurrences of titanium ores in the weathering crust were located in the following order: Ternivskyi, Nosachivskyi, Volkivskyi and Voronivskyi with the same rating assessment. In total, the crystalline basement rocks and weathering crust within the studied areas have significant resource potential and, after geological study, may be of practical interest.