Mineralogical and Geochemical Characteristics of stream sediments at Gulf of Al Aqaba, Sinai, Egypt

Abo El-Safa NA; Ibrahim ME; Walley El-Dine, Nadia; El Shershaby AM; El Bahei SM;

Abstract


The study area is part of south eastern Sinai, Egypt, western coastal zone of Gulf of Al -Aqaba. The
area of study is drained by Wadi (w) Lethel, W. Zewarai (trending NW-SE), W.Tarter and W. Um Adawi
(trending E-W). The ESEM-EDAX analyses revealed the presence of five groups. The first group
includes secondary uranium mineral; kasolite. The second group contains; Th-bearing mineral as
uranothorite. The third one include base metal as galena. The fourth group include accessory
minerals; columbite, xenotime and zircon. The last group contains supergene sulfide minerals; barite
and atacamite, beside hematite and goethite may reflect that the sediments have been subjected to
the extensive alteration. The concentrations of trace elements in stream sediment have been
determined by X-ray fluorescence spectrometry. The stream sediment samples at the downstream of
W. Um Adawi, shows high U and Th (from 687 to 1 ppm and from 589 to 3 ppm respectively), Zr and Y
contents (more than 1% and 2400- 3490 ppm respectively), manifesting the common presence of both
zircon - xenotime minerals .The later usually carrier for heavy rare earth elements (HREEs) . Also, Pb
contents in W. Um Adawi stream samples is also high ranging between about 1000 and 5000ppm
,suggesting the presence of galena mineral. Nb, varies between (1496-2165 ppm). Some samples in W.
Um Adawi contain high Ba (1759- 2500 ppm) and Sr (more than 1%) clarify the presence of barite
mineral .Cu element in some samples up to (297 ppm) may be indicator to the occurrence of atacamite
mineral. Barium, nickel, zircon, strontium and chromium contents were found to be high in most
stream sediment samples. The origin of uranium appears to be closely associated with Zn, Nb and Y
mineralization and may be reflects their intimate coherence.


Other data

Title Mineralogical and Geochemical Characteristics of stream sediments at Gulf of Al Aqaba, Sinai, Egypt
Authors Abo El-Safa NA ; Ibrahim ME ; Walley El-Dine, Nadia ; El Shershaby AM ; El Bahei SM 
Keywords Stream sediments, Gulf of Al Aqaba, uranium mineral, base metals.
Issue Date Oct-2014
Publisher Standard Scientific Research and Essays (ISSN: 2310-7502) http://www.standresjournals.org/journals/SSRE
Journal Standard Scientific Research and Essays 
Series/Report no. 2;10

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