TY - JOUR ID - 60535 TI - MINERALOGY AND RADIOACTIVITY OF THE SOUTHERN PART OF NASSER LAKE SEDIMENTS, EGYPT JO - Al-Azhar Bulletin of Science JA - ABSB LA - en SN - 1110-2535 Y1 - 2018 PY - 2018 VL - 29 IS - Issue 2-D SP - 143 EP - 163 DO - 10.21608/absb.2018.60535 N2 - Nasser Lake area delineated by Latitudes 22°00′ –23°58′ N and Longitudes 30°07′–33°15′ E. The identified heavy mineral assemblages of 64 collected representative samples of the study area can be classified into two main groups. The first one is the opaque minerals as; magnetite, hematite, ilmenite, leucoxene, vanadium, chromite, pyrite, atacamite, alumina minerals, gold and silver. The second group is non-opaque minerals includes garnet, monazite, rutile, zircon, titanite, apatite and green silicates (pyroxene and amphibole groups with other minerals such as: epidote, biotite, muscovite, andalusite and sillimanite).The examined sediments of studied area are characterized by radiometrically (low) concentrations of eU and eTh. The radiometrically elemental concentration of eU ranges between U/D and 4ppm with an average of 1.3ppm, while eTh is between 2 and 17ppm with an average of 5.61ppm. The Ra content ranges between 1and 4ppm with an average of 1.66ppm. The content of K ranges between 0.68% and 1.25% with an average of 0.61%. UR - https://absb.journals.ekb.eg/article_60535.html L1 - https://absb.journals.ekb.eg/article_60535_bb10e193c4421159b14b5ebba8e7db16.pdf ER -