ORE-BEARING ABILITY IN RARE METALS OF PROTEROZOIC MAGMATIC COMPLEXES IN THE UKRAINIAN SHIELD

• Дата: 2012
• Автори: KRYVDIK, S.G., DUBYNA, O.V.
• Формат: Стаття
• Мова: Українська
• Опубліковано: Institute of Geological Sciences, NAS of Ukraine 2012
• Теми: Ore-bearing ability; rare metals; Proterozoic magmatic complexes; Ukrainian shield
• Онлайн доступ: http://geojournal.igs-nas.org.ua/article/view/139205
• Назва журналу: Geological journal

  The geochemical specialization and ore bearing ability of main types (alkaline magmatic and metasomatic rocks, differentiated granites and their pegmatites, Sc-U albitites) of crystalline rocks from the Ukrainian Shield are considered. The prospects, forecasting areas and exploration of rare metals (Zr, Nb, REE, Y) deposits are shown. As a main result of investigation, the evidence availability for exploration of rare metal deposits (non-traditional type) related to hypersolvus syenites is cited. The genetic relation of the ore-bearing syenites with rich Zr, Nb, Y ores (Azov, Yastrubetske deposits) to anorthosite-rapakivi granite plutons as well to South-Kalchyk massif have been exposed. That significantly expands area (up to 20 thousand km2) for exploration of such type deposits. The interpretation of alkaline metasomatites from East Azov area as fenites of carbonatite complexes allows considering this region as of great potential on carbonatitc type deposits. A new type of alkaline metasomatites enriched in rare-earth elements was found.