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Exploration of gold at the east end of Wadi Allaqi, South Eastern Desert, Egypt, using remote sensing techniques

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An Erratum to this article was published on 17 September 2015

Abstract

The processing of ASTER images’ band ratios 7/6*4/6 and (7 + 9/8) supported by field geology, mineralogical, and geochemical analyses enabled detection of two alteration zones as targets for gold exploration at Al Faw-Eqat belt (a case study in the eastern end of Wadi Allaqi). Representative samples were collected from the detected areas north of Gabal Eqat (area 1) and north of Gabal Al Faw (area 2) for geochemical analyses to assess the gold and associated metals. The result of atomic absorption and induced coupled plasma (ICP) analyses recorded Au content up to 9.8 g/t in the quartz veins and 7.8 g/t in the altered volcanics in area 1 while recorded 14.0 g/t in the quartz veins and 6.8 g/t in the altered volcanics in area 2. Al Faw-Eqat belt is made up of metamorphic and magmatic late Proterozoic rock assemblages. The metamorphics consist of ophiolitic ultramafics thrusted over the metavolcanosedimentary (mvs) rocks of meta-basaltic andesite composition forming highly tectonized sheared mafic and ultramafic belt extended in the NW/SE trend. The magmatic suite comprises syn- to late-tectonic calc-alkaline granites of less deformed tonalite and monzogranites that were intruded by post-tectonic potassic alkali feldspar granite of Gabal Eqat sending sheets, plugs, apophasis, and quartz veins in the surrounded mvs leaving marked of alterations of promised areas for gold exploration.

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Authors and Affiliations

  1. National Authority for Remote Sensing and Space Sciences (NARSS), Cairo, Egypt

    Salem M. Salem & N. M. Soliman

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  1. Salem M. Salem
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  2. N. M. Soliman
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Correspondence to Salem M. Salem.

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Salem, S.M., Soliman, N.M. Exploration of gold at the east end of Wadi Allaqi, South Eastern Desert, Egypt, using remote sensing techniques. Arab J Geosci 8, 9271–9282 (2015). https://doi.org/10.1007/s12517-015-1880-x

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  • DOI: https://doi.org/10.1007/s12517-015-1880-x

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