摘要
Yanweishan Cu-Ag deposit,a medium sized Cu-Ag deposit,is located at northern part of volcanic rock zone in Greater Khingan Mountains,and east side of Huzhong of Huzhong-Tayuan polymetallic mineralization belt.The metallogenetic elements are Cu and Ag and associated Au.The mining area is located inside the volcanic dome structure,and ore bodies are controlled by north-west strike tectonic fracture and occur in the form of silicified breccia,which are distributed parallel with equal interval on the surface.The primary alteration types include silification,carbonation,fluoritization,sericitization,and allomorphic pyritization,montmorillonization,pholiditization,chloritization,kaolinization,ungvarization.The genesis type is high sulfide shallow layer medium-low temperature hydrothermal vein deposit.
