Trace Element Distribution in Relation to Post-magmatic Alteration in the Gabal Mueilha Granites, Southeastern Desert, Egypt PDF

Keywords

Egypt, granites, geological

Abstract

The Gabal Mueilha area consists of high-level granites with high content of volatiles and associated pegmatites and greisen, emplaced in a deep-seated tectonic zone. Geochemical bed-rock sampling was carried out in order to assess the mineralization potential of the district and to study the distribution and interelement relationships of Sn, Nb, Mo, Bi, Be, Pb, Y, Zr, Cu and Ti during magmatic and post magmatic processes. Results indicated that anomalous concentrations of Sn, Nb , Be, Mo and Bi are associated with the most intensively albitized and greisenized zones in the apical parts of the granites, probably due to their emanation transportation under the effect of degassing processes during magmatic and post-magmatic stages. Ti, Y and Zr are partially leached away during post-magmatic processes. There are marked differences in the behavior between Sn, Nb , Y, Zr, Cu , Pb and Ti during magmatic and post-magmatic processes. This is probably because they tend to form complexes that differ in mobility and stability under different geological environment