Mineral-bearing alteration zones at Gebel Monqul area, North Eastern Desert, Egypt, using remote sensing and gamma-ray spectrometry data

2021 ◽  
Vol 14 (18) ◽  
Author(s):  
Mahmoud Abd El-Rahman Hegab ◽  
Salem Mohamed Salem
Keyword(s):  
Remote Sensing ◽  
Gamma Ray ◽  
Eastern Desert ◽  
Gamma Ray Spectrometry ◽  
Alteration Zones ◽  
North Eastern ◽  
Area North

scholarly journals GEOLOGY AND PETROCHEMISTRY OF GABAL ABU-MESAID AREA, NORTH EASTERN DESERT, EGYPT

2007 ◽  
Vol 31 (1) ◽  
pp. 130-145
Author(s):  
L. M. NOSSAIR ◽  
A. ABU-DEIF ◽  
M. A. EL-TAHIR ◽  
H.I. FARAG
Keyword(s):  
Eastern Desert ◽  
North Eastern ◽  
Area North

scholarly journals Natural Radioactivity, Radiological Hazard and Petrographical Studies on Aswan Granites Used as Building Materials in Egypt

2021 ◽  
Vol 11 (14) ◽  
pp. 6471
Author(s):  
Nasser M. Moghazy ◽  
Amira M. El-Tohamy ◽  
Mona M. Fawzy ◽  
Hamdy A. Awad ◽  
Hesham M. H. Zakaly ◽  
...  
Keyword(s):  
Natural Radioactivity ◽  
Building Materials ◽  
Gamma Ray ◽  
Natural Radionuclides ◽  
Polarized Light ◽  
Environmental Parameters ◽  
Mineralogical Composition ◽  
Eastern Desert ◽  
Granitic Rocks ◽  
Gamma Ray Spectrometry

The present study was carried out on commercial types of Aswan granite used as building and decorative materials. Nearly 29 granitic rocks samples from 11 classes (black Aswan, red Aswan, dark Rosa, light Rosa, yellow Verdi, grey Shirka, Gandolla, Forsan, red Nefertiti, Royal, and white Halayeb) were collected from three stations near Aswan city for petrographical description and assessment of natural radioactivity. The petrographical study of granites was conducted by polarized-light microscope in order to determine their mineralogical composition and investigate their texture; the activity of the natural radionuclides 238U, Ra226, 232Th, and 40K was measured by gamma-ray spectrometry with a NaI(Tl) detector. The average values of the activities, 52.2 Bq kg−1, 57.8 Bq kg−1, 31.2 Bq kg−1, and 1055.7 Bq kg−1 of U-238, Th-232, Ra-226, and K-40, respectively, were higher than that the world average values of 35 Bq kg−1, 30 Bq kg−1 and 400 Bq kg−1 for 226Ra, 232Th, and 40K, respectively, according to the recommended levels from UNSCEAR reports. The minimum and maximum values obtained were compared with the value ranges from other locations in the Eastern Desert, highlighting the fact that that the maximum values obtained in this work are higher than those in other areas. According to the radiological hazards indices results, most samples lie in the permissible level ranges, suggesting their favorability for use as building materials. In contrast to that, some samples have some environmental parameters higher than the international levels, indicating their unsuitability as building materials.

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