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Information × Registration Number 0222U001976, 0117U002485 , R & D reports Title Prospect of use of zircon ores as complex raw materials on example of Azov deposit and Yastrubetske ore occurence (Ukrainian shield) popup.stage_title Head Гречанівський Олексій Євгенович, Registration Date 08-02-2022 Organization M. P. Semenenko Institute of geochemistry, mineralogy and ore formation popup.description2 Objects of research are Yastrubetske zirconium-rare-earth ore occurrence and Azov zirconium-yttrium-rare-earth deposit. The aim of the work is a comprehensive scientific study of zircon ores on the example of zircon and other minerals in connection with the study of the content and distribution of rare earth elements and Hf for different types of deposits on the example of Azov deposit and Yastrubetske ore occurrence. The main methods of experimental research were X-ray phase analysis and microprobe analysis. High-resolution NMR and EPR sample studies were also performed. The results of the study showed that the spectrum of rare earths in the zircon of the Yastrubetske ore occurrence is significantly yttrium, and in the Azov deposit - cerium. Zircons of Yastrubetsky ore occurrence contain HfO2(0.7-1.46%), UO2(0.06-0.54%), ThO2(0-0.51%), REE2O3(0.24-0.89%), Y2O3(0-1.1%). Zircons of the Azov deposit contain Hf(0.9-1.1%), U(0-0.06%), Th(0-0.04%), LREE(0.4-1.4%), HREE(0.04-0.14%), Y(0.16-0.4%). The increased content of U and Th oxides in the zircons of the Yastrubetske ore occurrence (0.1 - 0.55%) is one of the reasons for their metamictic state, compared to the Azov ones. It is established that HREE in the Yastrubetske ore occurrence zircons can be extracted in the technology of refined zirconium dioxide. The tendency of REE content increase in more metamictic zircon from alkaline rocks and granites is showed. It is assumed that REE3+ ions are localized in the metamictic phase in mineral form. The obtained results can facilitate the search for Hf, Y and REE with the lowest environmental risks. Product Description popup.authors Antonenko Tetiana S. Grechanovsky Alexey Evgenevich Hrechanovska Olena Ye. Kalinichenko Anatolii М. Kanunikova Lidiia I. Yushyn Oleksandr Oleksandrovych popup.nrat_date 2022-03-09 Close