Peralkaline syenites and granites form a conspicuous hill 1.5 km in diameter, and there are a number of small stocks, of similar composition, to the southeast. The granites contain about 10% biotite together with aegirine-augite and sodic amphibole. Xenoliths of country rock are abundant in the outer part of the main intrusion. There are some aplitic dykes.
EL RAMLY, M.F., BUDANOV, V.I. and HUSSEIN, A.A.A. 1971. The alkaline rocks of south-eastern Egypt. Geological Survey of Egypt, Paper, 53: 1-111.HASHAD, A.H. and EL REEDY, M.W.M. 1979. Geochronology of the anorogenic alkalic rocks, South Eastern desert, Egypt. Annals of the Geological Survey of Egypt, 9: 81-101.