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A major light rare-earth element (LREE) resource in the Khanneshin carbonatite complex, southern Afghanistan. Economic Geology, 107(2), 197-208. ⓘ South Khanneshin U-Th-REE occurrence [Bastnäsite] Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110

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Similar views were very recently expressed by Garba (2002) who inferred from the studies of gold and rare-metal pegmatite occurrences in the Kushaka Schist belt of North-western Nigeria that the mineralizations are controlled by, postdates the Pan-African tectonism and related to NE-SW and NNE-SSW trending regional fractures.

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The rare earths, or rare earth elements (REE), are a relatively abundant group of elements consisting of scandium, yttrium, and the 15 elements of the lanthanide series of the periodic table. Scandium (Sc) is the lightest rare earth element. Scandium is present in crustal rocks in amounts greater than lead and precious metals, but it rarely ...

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Rare earth element mines, deposits, and occurrences Location, geologic and mineral economic data for world rare earth mines, deposits, and occurrences compiled from published and non-published sources. Geographic coordinates are provided for 577 of the 799 deposits described here. Adiounedj Record 1 Record 1 of the Rare earth element mines, deposits, and occurrences

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Rare earth minerals are among the commodities most threatened by these increasingly hostile foreign policies. According to 2018 data from the US Geological Survey, the US is entirely reliant on imports for its supply of rare earth minerals, with 78% of all such imports coming from China, orders of magnitude ahead of the second-largest importer ...

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Abstract. Field, petrological and geochemical studies of pegmatite bodies in parts of Lokoja, Central Nigeria, have been undertaken with a view to characterizing them and determining the rare earth mineralization potentials. Pegmatite bodies which are zoned or poorly zoned occur as dykes trending N–S, NE–SW and NW–SE consisting dominantly ...

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Rare earth elements - Relatively scarce minerals such as niobium and yttrium. Reaming shell - A component of a string of rods used in diamond drilling, it is set with diamonds and placed between the bit and the core barrel to maintain the gauge (or diameter) of the hole.

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The Rare Earth Elements (REE) patterns fractionation with low heavy REE concentrations, has been interpret by Saha-Fouotsa et al., (2019) as a possible origin by partial melting of mafic material involving fractionation of amphibole and garnet. However, the absence of additional isotopic data did not allow further interpretation of the source ...