Geological and Geophysical Exploration for Uranium Mineralization in the El-Erediya Prospect Area, Central Eastern Desert, Egypt

Rabie, Said I.; Abdel-Meguid, Ahmed A.; Assran, Assran S.

doi:10.1007/978-94-011-5098-9_7

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…1 ). These plutons along with the hosted U mineralizations attracted several discussions [ 3 , 4 , 4 , 5 , 9 – 12 , 30 – 35 , 39 , 41 – 43 , 53 , 56 , 57 , 63 ]. Accordingly, both El-Missikat and El-Erediya plutons are post-orogenic, peraluminous, medium-to-coarse-grained, younger granitic intrusions composed mainly of perthite (31–50%), plagioclase feldspars (15–20%), and smoky quartz (20–35%), with small amounts of biotite and hornblende (1–3%).…”

Section: Geological Settingmentioning

confidence: 99%

Genetic implications of Th/U, Th/K, and U/K ratios for U mineralizations: A case study from El-Missikat and El-Erediya shear zones, Eastern Desert, Egypt

Abdel-Hakeem,

El-Tahir,

Zeid

et al. 2023

Geochem Trans

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The current work is an attempt to reveal the possible utilization of the radiometric measurements to build-up a complete genetic scenario for magmatic, hydrothermal, and supergene uranium mineralization. For this purpose, ground gamma-ray survey was performed through the exploratory tunnels dug perpendicular to El-Missikat and El-Erediya shear zones, the Central Eastern Desert of Egypt. Contents of U, Th, and K were measured for the host pink granite (e.g., avg.15.94 U ppm, 35.62 Th ppm, and 6.63% K), alteration zones (brecciation, silicification, greisenization, kaolinization and hematitization) (e.g., avg. 124.01 U ppm, 63.67 Th ppm, and 3.13% K), and mineralized silica veins (e.g., avg. 312.65 U ppm, 92.22 Th ppm, and 2.62% K). All of these data were graphically represented as correlation plots of Th vs. U, Th/U vs. U, Th vs. K, and U/K vs. Th/K. The overall results indicate magmatic, hydrothermal, and supergene sources of El-Missikat and El-Erediya U mineralization. The magma-derived U contents are enclosed mainly in the pink granite that is mostly characterized by normal Th/U (2.5–5) and Th/K ratios (3–5*10–4). The hydrothermal processes through the alteration zones and mineralized silica veins are reflected by the weak correlation of Th with U (e.g. r = 0.13 and − 0.39), the strong negative correlation of Th/U ratio with U (e.g. r = − 0.82), 2.5˃Th/U˃0.1, Th/K˃5*10–4, Th/K < 3*10–4, and the strong positive correlation of U/K with Th/K (e.g. r = 0.91) as well as the occurrence of thorite, columbite, xenotime and hydrothermal zircon (0.5 > Th/U ≤ 0.1). Afterwards, the hydrothermal mineralization underwent some degrees of chemical weathering that resulted in supergene U mineralization whose fingerprints can be traced by the occurrence of secondary U minerals (e.g. kasolite and uranophane), Th/U ratios ≤ 0.1, and the weak correlation between Th/K and U/K (e.g. r = 0.39 and − 0.11).

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Section: Geological Settingmentioning

confidence: 99%

Genetic implications of Th/U, Th/K, and U/K ratios for U mineralizations: A case study from El-Missikat and El-Erediya shear zones, Eastern Desert, Egypt

Abdel-Hakeem,

El-Tahir,

Zeid

et al. 2023

Geochem Trans

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“…Several methodologies [1]- [7] for uranium exploration have been attempted in the past to define the formation, alteration and enrichment of uranium deposits. But to successfully extract such strategic deposits, an integrated exploration technique is needed which will provide important references to radioactive ore-body disposition.…”

Section: Introductionmentioning

confidence: 99%

Integrated Studies for Mapping of Uranium Mineralization in Northern Cape Province of South Africa

Mishra¹,

Rao²

2015

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Globally, there has been an ever increasing demand for uranium. This generates the need to adopt unique methodologies in order to explore the mineral to its full extent. This paper highlights an integrated approach that is adopted to explore uranium occurrences in the Northern Cape Province of South Africa. The study area is located at Springbok of Namaqualand Region. Most of the area is dominated by smooth outcrops formed by "Woolsack" mode of weathering and is characterized by pinkish fine-grained concordia granites of fair size forming the hilly terrains. These granites were intruded by quartz and pegmatite veins which host uranium and associated ores. As part of the integrated approach, remote sensing, geological, geophysical and geochemical studies were carried out in the hilly terrain area of approximately 15 sq km area. Spectral analysis was carried out using ASTER and QuickBird imageries to identify the zones of mineralisation. Band combinations of R (5/8) G (4/6) B (6/7) revealed the occurrence of uranium ore in the study area. Remote sensing and geological studies prioritized area for geophysical and geochemical studies. Ground magnetic analytical signal maps helped in deciphering the sub-surface structural anomalies. Magnetic and radiometric studies revealed that the uranium mineralization was localized along the structural features which were of sub-surficial origin. Geochemical sampling helped to identify the zones with high uranium ore concentration along the structural trend of the area. Further, geochemical data analysis also strongly supported the geophysical data and showed that the host rocks contain mineable quantities of uranium. The above integrated study indicates that uranium mineralisation in this particular area is structurally controlled which is nothing but the manifestations of geological features such as faults, fissures, and joints. The study helped to identify two blocks covering 85 Ha and 174 Ha of area and 7 drilling locations were proposed for exploratory drilling.

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Uranium and rare metal mineralization in the El Sela and Qash Amir granitic intrusions, south Eastern Desert, Egypt

Shahin

Emad

Masoud

2021

Journal of Asian Earth Sciences: X

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Geological and Geophysical Exploration for Uranium Mineralization in the El-Erediya Prospect Area, Central Eastern Desert, Egypt

Cited by 3 publications

References 4 publications

Genetic implications of Th/U, Th/K, and U/K ratios for U mineralizations: A case study from El-Missikat and El-Erediya shear zones, Eastern Desert, Egypt

Genetic implications of Th/U, Th/K, and U/K ratios for U mineralizations: A case study from El-Missikat and El-Erediya shear zones, Eastern Desert, Egypt

Integrated Studies for Mapping of Uranium Mineralization in Northern Cape Province of South Africa

Uranium and rare metal mineralization in the El Sela and Qash Amir granitic intrusions, south Eastern Desert, Egypt

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