Search academic texts

Information × Registration Number 0217U001118, 0111U005652 , R & D reports Title The genetic features of minerals from untypical endogenic rare metal deposits and ore occurrences the Ukrainian Shield popup.stage_title Head Voznyak Dmytro Kostyantynovych, Registration Date 24-01-2017 Organization nstitute of Geochemistry, Mineralogy and Ore Formation popup.description2 The object of study is minerals of endogenous rare metal deposits and ore occurrences of the Ukrainian Shield in which concentrators of rare metals are the minerals in which concentrators of rare metals are minerals that are rare and do not form industrial clusters. These include the Azov Zr-REE deposit, Anadol REE ore occurrence (both objects are in Peri-Azovian megablock), petalite pegmatites of Shpolana-Tashlyksky ore district (Ingul megablock), Perzhanske Zn-Be deposit of Volyn megablock, main ore mineral of which is presented by genthelvite, Zhovtorichenske U-V-Sc deposit (Ingul megablock). The aim of research was to establish the mineral composition and formation conditions of these objects, in which industrial concentration of rare metals on the Ukrainian Shield is presented in comparison with the traditional composition of ores in other places of the planet untypical minerals hub. Research methods are x-ray, electronography (microprobe JCXA-733, scanning electron microscope JEOL JSM-6700F with ED spectrometer JED-2300), thermobarometric, cryometric, gas analysis, ICP-MS method for determination of REE and trace elements using the analyzer Element-2, X-ray fluorescence (XRF), photoluminescence, infrared spectroscopy; optical identification of minerals was carried out using a polarizing microscope MIN-9, Polmi A (Karl Zeiss Jena) and stereomicroscope SZM-45T2 Zoom series. For photographing in transmitted light was used digital camera Power Shot A630 (Canon) (all in the N. P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of NAS of Ukraine). Outside the Institute for the study of zircon was used scanning electron microscope JEOL JSM-6510LA with ED spectrometer JED-2200 (IGGD Russian Academy of Sciences, Saint Petersburg, Russian Federation), the concentration of REE and rare elements was determined by ion microprobe Cameca IMS-4f. The size of the test plots is less than 20 microns in diameter; the relative error of the determination of most components was 10-15%, sensitivity is an average 10 ppb. The crystallization temperature of zircon was determined using titanium thermometer. Results. Deposits in which the concentrators of REE and other rare metals are untypical minerals formed special initial conditions. Important role in the formation of deposits played the imposed flows of CO2 fluids: participated in the formation of a new ore type: like petalites, carbonates of REE (mainly bastnaesite), crystallization of genthelvite. Product Description popup.authors Ільченко Катерина Олександрівна Бельський Володимир Миколайович Возняк Дмитро Костянтинович Галабурда Юрій Андронович Герасимець Ірина Миколаївна Гречановська Олена Євгенівна Кульчецька Ганна Олександрівна Лупашко Тетяна Миколаївна popup.nrat_date 2020-04-02 Close