On the genesis of surficial uranium occurrences in West Central Sinai, Egypt

Hussein, H.A.; Abdel-Monem, A.A.; Mahdy, Mahmoud A.; El-Aassy, Ibrahim E.; Dabbour, G.A.

doi:10.1016/0169-1368(92)90008-9

Cited by 28 publications

(13 citation statements)

References 2 publications

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“…In addition, various ore minerals have actually been identified in the various rock units of Abu Zeneima as has been reported by Dabbour and Mahdy (1988); Hussein et al (1992); Amer (1993 &1997); Abdel Momen et al (1997). The main identified secondary U minerals include uranophane, betauranophane, carnotite, kasolite, meta-torbernite, meta-uranocircite and bassetite.…”

Section: Introductionmentioning

confidence: 54%

Extraction of Uranium Using Alamine336 in Kerosene From Sulfate Solution of Abu-Hamata Sandy Claystone Ore Sample, Southwestern Sinai, Egypt

Wahab

Abdellah

2017

Bulletin of Faculty of Science, Zagazig University

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The present study is concerned with the feasibility of using organic solvent, Alamine 336 in kerosene to extract U from sulfate leach liquor of Abu-Hamata sandy clay stone ore sample. The prepared sulfate leach liquor assays 0.45g/L of U with achieved leaching efficiency of 98.9%. The obtained results indicate that U extraction efficiency depends mainly on Alamine 336 concentration, strongly influenced by pH value, contact time and the organic / aqueous (O/A) ratio. Uranium in the organic phase was stripped using a solution of 1M NaCl acidified with 0.2M H 2 SO 4 with an achieved stripping efficiency of 93.9% at A/O ratio of 1/1 and shaking time of 5min. Not less than 99% of U in the obtained U rich strip solution was directly precipitated using H 2 O 2 solution to produce the final pure product of U 3 O 8 .

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Section: Introductionmentioning

confidence: 54%

Extraction of Uranium Using Alamine336 in Kerosene From Sulfate Solution of Abu-Hamata Sandy Claystone Ore Sample, Southwestern Sinai, Egypt

Wahab

Abdellah

2017

Bulletin of Faculty of Science, Zagazig University

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“…play an important role as natural adsorbent to heavy and nuclear metals such as vanadium and uranium (Katayama et. Al., 1974, Hussein et al, 1992, Dent et al, 1992, Thompson et al, 1998, Ibrahim et al, 2007a, b & c and Raslan et al, 2004. The altered feldspars were also subjected to EDAX analysis.…”

Section: -Mineralogical Investigation Of the Light Fractionmentioning

confidence: 99%

Contribution to the Mineralogy of El Sela Uraniferous Shear Zone, Southeastern Desert, Egypt

Emad

2015

Al-Azhar Bulletin of Science

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El Sela area is one of the most important localities for uranium mineralization in the granites of the southeastern Desert of Egypt. Radiometric analyses for the light and heavy fractions from composite mineralized channel samples collected from the kaolinized granite proved the presence of high uranium concentration in both fractions. The light fraction represents about 84.80% by weight of original sample, containing an average of 26.90% of the total uranium present in these samples. Detailed microscopic examination, X-ray diffraction (XRD) analysis and scanning electron microscope (SEM) were used to identify and characterize the uranium bearing-minerals responsible for the radioactivity in both heavy and light fractions of the studied samples. The heavy fraction (15.2 wt %) is characterized by the presence of secondary uranium minerals (lead-meta-tautunite and phurcalite) together with zircon. In addition of non-radioactive minerals (fluorite, apatite and titanite) are recorded. On the other hand, the high radioactivity of the light fraction is mainly attributed to the presence of secondary uranium minerals coating the light minerals and most probably to the adsorption of hexavalent uranium onto clay minerals (kaolinite) resulting from alteration of feldspars. This mode of occurrence of the uranium must be considered during mineral processing whether by physical or direct hydrometallurgical treatments.

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“…At Abu Thor area uranium and copper mineralizations are recorded within intra-Carboniferous paleokarst profile of Um Bogma Formation. The origin of copper and uranium mineralizations of Um Bogma Formation was discussed by many authors including Hilmy andMohsen (1965), El Reedy et al (1988), Dabbour and Mahdy (1988), El-Sharkawi et al (1990), Hussein et al (1992), Aita (1996) and Abd El Moneim et al (1997). Recent studies by Mira and Aita (2009) postulated that the Carboniferous stratabound Cu and U mineralizations in the form of copper carbonate, chloride, silicate, sulphate and phosphate minerals are of supergene origin and have been concentrated by pedogenic processes and latosol formation.…”

Section: Mineralogical Characteristicsmentioning

confidence: 99%

Successive Recovery of Copper and Uranium From Carbonate - Rich Latosol, Um Bogma Formation, Abuthor Locality, South Western Sinai, Egypt

El‐Sheikh

Amin

Aita

et al. 2013

Nuclear Sciences Scientific Journal

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A technological sample of a copper/ uranium mineralization in carbonate rich latosol rock sequence of Um Bogma Formation Abu Thor locality at southwestern Sinai, Egypt, has been properly processed. The working sample assaying 12.5 % CuO and 875 ppm U was subjected to adipic acid leaching for copper followed by bioleaching of uranium in a manner to avoid excessive acid consumption in the classical leaching procedure. It is thus possible to achieve leaching efficiencies of 95% for Cu in the first stage and 82% for U in the second stage. From the two separately obtained leach liquors of Cu and uranium, pure products have conveniently been prepared. Accordingly, Cu adipate product was first prepared by crystallization,followed by acid dissolution and alkali precipitation of copper hydroxide. In case of uranium, the impure precipitate of the bioleach liquor is purified via Amberlite IRA-400 anion exchanger resin.

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On the genesis of surficial uranium occurrences in West Central Sinai, Egypt

Cited by 28 publications

References 2 publications

Extraction of Uranium Using Alamine336 in Kerosene From Sulfate Solution of Abu-Hamata Sandy Claystone Ore Sample, Southwestern Sinai, Egypt

Extraction of Uranium Using Alamine336 in Kerosene From Sulfate Solution of Abu-Hamata Sandy Claystone Ore Sample, Southwestern Sinai, Egypt

Contribution to the Mineralogy of El Sela Uraniferous Shear Zone, Southeastern Desert, Egypt

Successive Recovery of Copper and Uranium From Carbonate - Rich Latosol, Um Bogma Formation, Abuthor Locality, South Western Sinai, Egypt

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