Alkaline Rocks and Carbonatites of the World

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El Ghurfa (Gabal El Ghurfa)

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Occurrence number: 
049-00-024
Country: 
Egypt
Location: 
Longitude: 34.23, Latitude: 24.45

This intrusion, emplaced in Nubian sandstones, forms an annular ridge 1 km in diameter rising 25-30 m above wadi level. It is composed of latites which are cut by latite dykes that are also annular; the dykes contain sodic amphiboles. There is a further elongate latite intrusion to the southwest of Gabal El Ghurfa around which is a system of arcuate dykes of olivine basalt. Another intrusion 4 km to the south-southeast (El Ramly et al., 1971) consists of basalts and phonolites. Analyses of latite, phonolite and basalt are given by El Ramly et al. (1971).

References: 
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.
Location: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith