U-bearing minerals in El Atshan trachyte, central Eastern Desert, Egypt Hamdy H. Abd El-Naby*,** * King Abdulaziz... 530 El Maadi, Cairo, Egypt - El Atshan area, situated in the central Eastern Desert of Egypt, is a... - - - - - - - - - - - - Keywords: Egypt, Unidentified Zr rich silicate mineral, Betafite...Ewing, - - - - doi:10.2465/jmps.080506 H.H. Abd El-Naby, hhabdel@yahoo.com Corresponding author 1985...of - - - 38 H.H. Abd El Naby - Figure 1. Geological map of El Atshan area. 500 600 °C by a relatively |