Granites consisting of perthite, quartz and riebeckite form the Abu Homr pluton and the western part of the Gabal Abu Dalf intrusion.
SABET, A.H., HASSAAN, M.M. and EL GAMMAL, S.A.S. 1990. Petrographic and geochemical studies on the basement rocks south of Gabal El Shayib, Eastern Desert, Egypt. Annals of the Geological Survey of Egypt, 16: 107-9.