Results 1 to 10 of about 342 (160)
Journal of Mining Institute, 2020 The article presents the results of optical, electron microscopic and electron microprobe studies of columbite group minerals, collected during heavy mineral concentrate sampling of alluvial deposits in the Mayoko region (Republic of the Congo).
Idylle Plachini LOUFOUANDI MATONDO +1 more
exaly +3 more sources
The Stability of TiO2 Phases Studied Using r2SCAN in the Hubbard-Corrected Density Functional Theory [PDF]
MoleculesTitanium dioxide is a quintessential transition metal oxide with many technologically important applications. With its richness in phases, it has also been a testing ground for numerous theoretical studies including density functional theory.
Jared Pohlmann +3 more
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Fluorite and rare-metals mineralization in greisenized granite of Um Naggat area, Egypt constrained by physical separation and beneficiation assessment [PDF]
Scientific ReportsFluorite and rare-metals mineralization hosted within the greisenized granites of Um Naggat area, Central Eastern Desert, Egypt, represents a potential source of critical raw materials. The studied sample is dominated by quartz and feldspar, with a minor
Mona M. Fawzy +2 more
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Study of the physical properties of aluminothermic slags for the recovery of uranium and thorium
Brazilian Journal of Radiation Sciences, 2021 NORM minerals generate, after metallurgical processing, radioactive slags that can be controlled by CNEN. Thus, it is necessary to establish a reprocessing route to make the material exemption. The route necessarily passes through the characterization of
VANDERLEI VILAÇA MOURA +2 more
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Geosciences, 2023 In this paper we present textural and compositional data for columbite group minerals (CGMs) and associated Nb-Ta-Sn oxides from lithium-beryllium-tantalum pegmatite deposits of the Kolmozero–Voronja belt, NW Russia, with the aim of deciphering these ...
Dmitry Zozulya +3 more
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Research Progress in situ Hf Isotopic Analysis of Oxide-type U-bearing Accessory Minerals
Yankuang ceshi, 2022 BACKGROUND In recent years, the in situ Hf isotopic determination method of zircon has been widely used in isotopic geochemistry, and has become an important method to explore the genesis of rocks, the source of ore-forming materials and the evolution of
CUI Yurong +4 more
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Geofluids, 2022 The formation of columbite-group mineral phases in peraluminous granite has not been demonstrated to date. Here, a nanoscale study of the columbite-tantalite mineral in the Zhaojinggou Nb-Ta deposit in North China Craton elucidated its formation ...
Yushan Zuo +6 more
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Crystals, 2023 LCT (lithium–cesium–tantalum) pegmatites from the Kaustinen and Kolmozero regions contain columbite–tantalite mineralization, which has been presented in this study.
Miłosz Huber +2 more
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MINERALOGICAL-GEOCHEMICAL FEATURES OF CORUNDUM MIASKITE-PEGMATITE FROM MINE NO. 210 (ILMENY MOUNTAINS, SOUTH URALS): PRELIMINARY RESULTS [PDF]
Минералогия, 2020 Miaskite-pegmatite of mine no. 210 exhibits an unusual mineral composition for the Ilmeny Mountains. It contains a significant amount of sapphire-like corundum (uncommon of nephelinebearing pegmatites) and various Th-bearing minerals («thoro-aeschinite»,
M.A. Rassomakhin +2 more
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TO THE ONTOGENESIS OF AESCHYNITE IN FELDSPAR VEIN NO. 31 OF THE VISHNEVYE GORY, SOUTH URALS [PDF]
Минералогия, 2022 Small grains of accessory aeschynite in feldspar vein no. 31 of Vishnevye Mountains (South Urals) co-crystallize with late growth zones of feldspar crystals, as well as with ilmenite, titanomagnetite, muscovite, zircon, monazite, thorite, rutile ...
V.A. Popov, I.A. Blinov, V.I. Popova
doaj +1 more source