Ore-Forming Conditions and the Process of Gold Mineralization of Wendeng Gold Deposit, Shandong──Application of Cathodo-Luminescence in Fluid Inclusion Studies

摘要

The Wendeng gold deposit is located 30 km northwest of Wendeng City,Shandong Province, occurring in a brecciated alteration zone in the foot wall of the NNE-striking fault(F1). It consists of quedz, pyrite, specularite, potash feldspar, sericite,carbonates and chlorite hosted in Proterozoic biotite-plagiclasee gneiss.Three generations of quartz are recognized based on cathodoluminescence and micromorphology. Systematic studies sf fluid inclusions provide data to establish P-T-V-Xrelations for the fluid evolution in mineralization procee. It is concluded that the ore-forming solution was evolved from meteoric water through thermal events during Mesozoictectonics. The precipitatfon of gold was related to two boiling events.