Mineralogy and Radioactivity of Gabal El-Urf-Abu Shiht Area Stream Sediments, North Eastern Desert, Egypt

S. M. El Alfi — Wed, 15 Jul 2026 00:00:00 +0000

The area covered by basement rocks represented by metavolcanics, older granite, younger gabbro, and younger granite, pegmatites and dikes. The area covered by 25 samples of stream sediments, Wadi Abu Shih covered by 15 samples and wadi Abu Shihat covered by 10 samples. The total heavy minerals ranging from 4.056% to 6.521% with an average of about 5.148% in wadi Abu Shih and ranging from 3.243% to 4.752% with an average of about 4.187% in wadi Abu Shihat. The total heavy economic minerals ranging from 1.716% to 4.634% with an average of about 2.898% in wadi Abu Shih and ranging from 1.254% to 1.813% with an average of about 1.5825% in wadi Abu Shihat. The radioactive minerals represented by samarskite, thorite, columbite and fluorite. The eU examined in the stream
sediments of Wadi Abu Shih ranges from 4 ppm to 25 ppm, with an average 13.93 ppm, while eTh ranging from 12 ppm to 60 ppm, with an average 30.13 ppm, Ra ranging from 4 ppm to 19 ppm, with an average 8.53 ppm and K% ranging from 1.4% to 2.6 %, with an average 2.12%. The eU examined in the stream sediments of Wadi Abu Shihat ranges from 5 ppm to 9 ppm, with an average 6.5 ppm,
while eTh ranging from 11 ppm to 16 ppm, with an average 13.7 ppm, Ra ranging from 5 ppm to 9 ppm, with an average 6.9 ppm and K% ranging from 1.1% to 3.3 %, with an average 1.91%. The variation diagrams between radioactive elements shows the low alteration processes affecting on the samples in wadi Abu Shih while shows the high alteration processes affecting on the samples in wadi
Abu Shihat.

Middle East Journal of Applied Sciences

Mineralogy and Radioactivity of Gabal El-Urf-Abu Shiht Area Stream Sediments, North Eastern Desert, Egypt