ABSTRACT
Gold deposits at the Eastern Desert of Egypt are hosted by Precambrian rocks. Gold mineralisation is related to three main tectonic settings. The first is older and is related to the divergent plate setting in which the gold is related to gold-bearing quartz veins cut through ultramafic assemblage (ophiolite and / or island arc). This gold is silver-poor and is characterized by the presence of arsenopyrite. The second setting is younger and is related to the post teconic granitic intrusions (convergent plate tectonics). This gold is almost silver-rich and is coexisted with chalcopyrite disease and in some cases blebs of galena. The third type is related to supergene processes in the weathering profile and is characterized by considerable contents of copper.
