الفهرس 
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Abstract
Khour Abalea is located in Abu Rusheid Prospect which occupies a small part of the Precambrian basement of the south Eastern Desert of Egypt. The investigated area is located between longitudes 34o 46` 00`` to 34o 46` 35``E and latitudes 24o 38` 12`` to 24o 37` 34``N. The area is surrounded by the famous ancient mining activities for emerald. Recently, NMA launched a comprehensive exploration program in W. Al Gemal Basin for two important sites of valuable Nuclear Materials. The detailed geology of Abu Rusheid area is composed of (1) Opiolitic melange, (2) Cataclastic group, consisting of protomylonites, mylonites, ultramylonites and silicified ultramylonites; (3) Syncollision plutonites, consisting of mylonitic granites; (4) post granitic dykes and veins and (5) Recent alluvial deposits. The identified minerals can be grouped into 2 groups in addition to associated mineraloids from the point of view of the present work as follows: Ore minerals group. Associated and gangue minerals group. Total count shows that the widely distributions values confined between 0 400 Ur reached to 1200 Ur as individual spots. This is appears especially at the contacts between ophiolitic m(Rb(Belange and mineralized mylonitic rocks (silicified or micaeous ones) in the area around Khour Abalea. The interpretation of SP data can be summaries as follows: The central eastern part of the study area exhibits highly positive SP responses with SP value reaches to 152 mV. These positive SP responses are associated with ultramylonite rocks, while the relatively low positive SP values are observed at the central part of the study area and associated with mylonite rocks. Qualitatively, from the contour maps of the four frequencies, the results reveal that, strong EM anomalies at the extension of the previous EM anomalies. This may confirms the obtained results at this part and indicates that the existence of two strong conductive bodies at the north central part of the study area. Quantitatively, (HLEM) survey penetrated to depth of 70m and detected most of anomalies dipping in 65oE in the northern part while this depth is frequently decrease towards the south to reach about 17m near the contact of Khour Abalea (Arm B) with the first shear zone. The mineralization supposed to occur in the deeper than the depth of penetration of the SP and HLEM technique which used in the study. Other strong geophysical techniques of deeper penetration such as induced polarization (IP) technique are recommended to be conducted in the locations of the negative SP and HLEM anomalies in order to explore the