Primary uranium mineralization in sheared pegmatite of Wadi El Regita, South Sinai, Egypt

Bishr, A.H.A.; Azzaz, Said A.; Sherif, Hassan M.; El-Aassy, Ibrahim E.

doi:10.21608/djs.2008.152961

Cited by 2 publications

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“…The NNE-SSW, N-S, NW-SE and NE-SW fractures are predominant trends for uranium mineralization in the eastern desert of Egypt and south Sinai. In south Sinai, several types of uranium mineralizations are recorded along numerous shear zones, pegmatites and quartz veins having the above mentioned trends ](El-Regeita, Um Zariq and Ghazala areas, Bishr, 2003 andBishr et al 2009); (Um Alawi, El-Rusis, Wadi Akhdar areas, El Akeed, 2009 and2014); (Wadi Zaghra area, Sallam et al, 2019); (Wadi Seih area, Sherif ,1998); (Wadi El Barrah area, Sherif, 1993;El Galy, 1994 andGabr, 2005); (Wadi Sahu area, Bishr ,2003 andGabr 2005)[ Although some of secondary uranium minerals such as kasolite and uranophane are recoded by Sherif (1993) El Galy (1994 and Gabr (2005) in the NNE-SSW and NE-SW trending fluorite-bearing quartz veins in the studied syenogranites, uraninite is firstly recorded in these veins at this study.…”

Section: Fracture Analysesmentioning

confidence: 99%

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Geology and mineralogy of fluorite-bearing quartz veins hosted by the Late Neoproterozoic syenogranite, south Wadi El Barrah area, south Sinai, Egypt

Elakeed,

Sherif,

Gabr

2023

Frontiers in Scientific Research and Technology

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Although uraninite is recorded in the granite pegmatite of south Sinai, this study represents the first record of uraninite in fluorite-bearing quartz veins in south Wadi El-Barrah area, south Sinai. Wadi El-Barrah is a tributary of the famous Wadi Akhdar which can be accessed through the asphaltic road reached to Saint Katherine city. The area is covered with older granites, monzogranite, quartz syenite, pre-syenogranite dykes, syenogranite and post-syenogranite dykes. The area is affected by numerous strike-slip faults and related fractures with NNE-SSW, NW-SE and NE-SW directions. The NNE-SSW and NE-SW fractures are filled with fluorite-bearing quartz veins where some of them show high radioactive intensities. The radiometric study that carried out on these fractures and the associated fluorite-bearing quartz veins indicates that eU ranges from 370 to 780 ppm while eTh ranges from340 to 810 ppm. This abnormal radioactivity is attributed to the presence of uraninite, uranosphaerite and thorutite minerals. Uraninite is of hydrothermal origin as indicated by the presence of galina and deep violet fluorite while uranosphaerite is an alteration product of the uraninite.

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Section: Fracture Analysesmentioning

confidence: 99%

“…Although uraninite is recorded in the granite pegmatite of south Sinai (Sherif, 2003 andBishr et al, 2009), it is not recorded in veins. This study is considered as the first record of uraninite in the fluorite -bearing quartz veins in south Sinai.…”

Section: Introductionmentioning

confidence: 99%