毕力赫金矿床围岩蚀变及其与金矿化关系

Relationship of Wall Rock Alteration and Gold Mineralization in the Bilihe Gold Deposit

本文对毕力赫金矿床Ⅱ矿带围岩蚀变及其与金矿化关系进行了研究。矿床主要蚀变类型为硅化、钾化、黄铁矿化、绢云母化、电气石化、绿泥石化、高岭土化、碳酸盐化,其中硅化、绢云母化、黄铁矿化与金矿化关系密切;蚀变分带明显,由地表向下,依次为青磐岩化带→绢英岩化带→钾质蚀变带,绢英岩化带与金矿化关系最为密切。

Relationship of wall rock alteration and gold mineralization in the Bilihe gold deposit（No.II ore zone）were studied.The result shows that the main types of wall rock alterations are silicification,potash feldspathization,pyritization,sericitization,tourmalinization,choritization,kaolinization,carbonatation,and that gold mineralization is closely related to silicification,sercitization and pyrization.Wall-rock alteration zonations are very notable,they are propylitization,sericitization and potash feldspathization zones from surface to underground,the ore shoot is located in sericitization-silicification zones.