Study On Orogenic Gold Deposits In Wadi Sharas,Northwestern Of Republic Of Yemen

My Ph.D program is planned to be done in Wadi Sharas gold deposit atHajjah city, northwestern Republic of Yemen. The orogenic gold depositoccurs in Neoproterozioc Hajjah metamorphic belt (Nabitah orogenic belt).Gold minerals are found mainly as native metale into types of ore zones.i.e.1) Gold deposit in quartz veins;2) Gold deposit in disseminated sulfidesand quartz veinlets and3) Gold deposit in disseminated to massivebase-metal sulphide.The aims of this study are to:(1) address the geochemistry and origin ofthe ore fluids involved in the Group of the Sharas gold deposit; in order toexplain the geochemistry of the ore bearing fluids,(2) determine theparagensis sequence and characterize ore minerals in the deposits,(3) providedata on ore depositional conditions,(4) characterize each mineralizing eventand the evolution of Au-bearing ore fluids,(5) to establish genesis models forthe deposits, emphasising structural control, hydrothermal alteration andcharacteristics of the mineralizing fluids, and (6) identify the distribution ofgold, its chemistry, paragenesis and mineralogy to provide a mineralogicalbasis of ore processing. Meeting these aims will help to identify differencesbetween mineralized and barren systems and to constrain the favorableenvironment for localization of similar gold mineralization.