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Information × Registration Number 0217U003175, 0112U002431 , R & D reports Title Isomorphic and nonisomorphic impurities and radiation-induced processes in nanoscale fragments of mineral structures related with solving of the ecological and mineralogical problems associated with minerals popup.stage_title Head Brik Aleksandr Borisovich, Registration Date 20-01-2017 Organization nstitute of Geochemistry, Mineralogy and Ore Formation popup.description2 It was reasonably proven by EPR method the typomorphism to gold of isomorphic ion-radicals NH3 associated with radiation-induced processes in nanoscale fragments of mineral structures in potassium feldspar and it was suggested that ammonium played an important role at all stages of the formation of hydrothermal deposits of this metal. The study showed the effectiveness of the method the 1H-NMR to determine the types of water in nominally anhydrous feldspar and their structural changes. It is shown that using of 23Na and 27Al NMR one can determine the number of plagioclase (albite percentage), coordination of aluminum ions (AlVI, AlIV) and the nature of the distribution of Al/Si and Na/Ca. The data obtained show that the formation of Klintsy gold ore was accompanied by a marked hydrothermal alteration of the structure and composition of feldspars. The study showed that using the methods of magnetic resonance one could distinguish feldspars from uran albitites from nonmetallic at relatively low concentrations of ore component, that can be used as a search criterion, in connection with the solution of mineralogical problems associated with minerals. Product Description popup.authors Багмут Миколай Миколайович Брик Олександр Борисович Гречанівський Олексій Євгенович Дудченко Наталія Олександрівна Калініченко Анатолій Михайлович Калініченко Олена Анатоліївна Юшин Олександр Олександрович popup.nrat_date 2020-04-02 Close