Soliman Abu Elatta A. Mahmoud

Nuclear Materials Authority

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Elham Awny

Nuclear Materials Authority

GEHAD MANSOUR

Nuclear Materials Authority

El‐Sayed A. Manaa

Nuclear Materials Authority

Hani H. Ali

Nuclear Materials Authority

Anthony E. Williams‐Jones

McGill University

Cooperative Institutions

Nuclear Materials Authority

Taif University

Desert Research Center

McGill University

Planetary Science Institute

University of Hong Kong

Research Canada

The Open University

Université de Montréal

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El Seboah peralkaline A-type magmatism, South Western Desert, Egypt: evidences for the HFSE and REE enrichment

Arabian Journal of Geosciences (2018)

Soliman Abu Elatta A. Mahmoud

Peralkaline rock

Aegirine

Trachyte

Dike

10.1007/s12517-018-3555-x

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Citations (3)

Selective Leaching and Separation of Uranium from Ochre-Umm Greifat, Red Sea Coast, Central Eastern Desert, Egypt

Mining Metallurgy & Exploration (2024)

El‐Sayed A. Manaa Soliman Abu Elatta A. Mahmoud Elham Awny

Abstract The Ochre-Umm Greifat area is one of the Red Sea areas with high concentrations of iron and zinc, which is formed from hydrothermal solutions as a result of the structural activity that occurred in the Red Sea Zone during the Pleistocene period. These deposits are also accompanied by deposits of low- to high uranium grade. In addition to Zn, Pb, and Cu anomalies, particularly in fault zones and their branches affecting the study area, although there are numerous zinc minerals in the Ocher-Greifat area, uranium minerals are scarce, with only one mineral, compreignacite, being recorded and the majority of the uranium being present as an adsorbed element on iron and/or clay stones. In addition, uranothorite is extremely rare and occurs as fine grains embedded in rocks. A technological sample was taken from an iron-rich clay area in a fault zone and was found to assay 700-ppm uranium. The leachability of uranium from the used sample was investigated using an alkaline solution based on the chemical and mineralogical composition of the used sample. The selected ore is treated with Na 2 CO 3 and NaHCO 3 in the presence of H 2 O 2 as oxidant. Many digestion factors are studied and optimized. Under the optimum leaching conditions, the uranium dissolution efficiency is around 84%. For the uranium separation, the pH of the leach liquor is adjusted at 10, then subjected to a solvent extraction step using 4% Aliquat ® 336/kerosene in the presence of isodecanol as third-phase prevention. The loaded organic solvent was then treated with NaOH/H 2 O 2 solution as a stripping solution. Finally, the resultant solution is subjected to a precipitation step using ammonia solution.

Uraninite

10.1007/s42461-024-01019-w

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Mineralogy and geochemistry studies on the Nusab El Balgum granitic batches, South Western Desert, Egypt

Arabian Journal of Geosciences (2018)

Soliman Abu Elatta A. Mahmoud Anthony E. Williams‐Jones

Peralkaline rock

Amphibole

Trachyte

Pegmatite

10.1007/s12517-018-3882-y

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Citations (3)

Petrogenesis, Geodynamics and Radioactivity of the Granitic Rocks of the Nugrus Weakness Zone, South Eastern Desert, Egypt

Acta Geologica Sinica - English Edition (2021)

Soliman Abu Elatta A. Mahmoud GEHAD MANSOUR

Abstract The studied granitic bodies belong to the south Eastern Desert of Egypt. They extend in a NNW–SSE trend along the same strike of the Nugrus weakness zone by which they are structurally controlled. These rocks are composed of biotite and biotite‐muscovite monzogranites to syenogranites. Geochemically, a higher abundance of Ba and Rb in biotite granites with a relatively low abundance in biotite‐muscovite granites as well as the diversity of Th, U, Nb, Ta, Zr, and REE reflects their origin from different sources and geodynamic settings. The biotite granites are predominantly metaluminous to low peraluminous whereas the biotite‐muscovite granites have a peraluminous nature. Potassium enrichment at the expense of calcium in these rocks reflects a derivation from crustal sources by partial melting in the presence of a volatile system. Radiometric investigation showed high abundances of U (up to 38 ppm) and Th (up to 26 ppm) in biotite‐muscovite granites relative to biotite granites (up to 5 ppm U and 18 ppm Th). Radioactive anomalies furthermore have been recorded in parts of biotite‐muscovite granites that were affected by the faults (up to 116 ppm eU and 97 ppm eTh). Consequently, biotite‐muscovite granites form a potentially fertile source for uranium mineralization.

Muscovite

Pegmatite

Petrogenesis

10.1111/1755-6724.14740

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The rare metal deposits of the El Garra El Hamra syenites, South Western Desert, Egypt

Ore Geology Reviews (2018)

Soliman Abu Elatta A. Mahmoud

Peralkaline rock

Aegirine

Allanite

Trachyte

Carbonatite

Porphyritic

Amphibole

10.1016/j.oregeorev.2018.08.001

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Citations (7)

Geology, mineralogy and mineral chemistry of the NYF-type pegmatites at the Gabal El Faliq area, South Eastern Desert, Egypt

Journal of Earth System Science (2019)

Soliman Abu Elatta A. Mahmoud

Pegmatite

Columbite

Allanite

Topaz

Leucogranite

Wadi

10.1007/s12040-019-1169-7

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Citations (12)

Geology and genesis of vein-type corundum deposits in the Hafafit-Nugrus area, South Eastern Desert, Egypt

Geologos (2020)

Soliman Abu Elatta A. Mahmoud Hani H. Ali

Abstract Unusual deposits formed by corundum are described from two separate pegmatitic veins in the Hafafit-Nugrus area of the South Eastern Desert of Egypt. Other related minerals are described too. The vein-type of corundum at Locality 1 (Vein 1) crosscuts through exposed rocks of an ophiolitic mélange, whereas at Locality 2 (Vein 2), it crosscuts through exposed serpentinised ultramafic rocks. The main minerals in Vein 1 are plagioclase, corundum, grossular, phlogopite, muscovite and clinochlore, while almandine, xenotime-(Y), allanite-(Ce), zircon, Cr-rich spinel, apatite, titanite, fergusonite-(Y), meta-ankoleite, U-rich thorite (uranothorite), carbonate and illite are the accessories. In Vein 2, the main minerals are plagioclase, corundum, phlogopite and chlorite, while clinochlore, euxenite-(Y), Nb-rich rutile, almandine, xenotime-(Y), allanite-(Ce), zircon, spinel, apatite, titanite, kasolite, dickite, illite, carbonate, antigorite and talc are accessories. The two types of corundum veins differ in their concentrations of Th, U, Zr, Nb, Ta, REE, Y and Li in whole-rock compositions. Field observations, mineralogy and chemical analyses of samples from the two veins of corundum deposits, as well as concentrations of chromophore elements in corundum crystals, suggest metasomatic origins. The present study suggests that the two types of corundum veins formed at different ages from different residual magmas that underwent in-situ hybridisation with the host rocks.

Phlogopite

Titanite

Allanite

Corundum

Muscovite

10.2478/logos-2020-0018

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Citations (1)