Abstract:

We discuss the ore-formation function in Jiapigou gold mine,ore-formation belt is closely related to the Archean metamorphic rocks,mantle-derived magmatism and ductile shearing.The ore-formation fluid is mainly mantle fluid and the ore-formation materials mostly come from mantle.The ductile shearing belt are not only the migration channel of ore-information fluid,through mantle activity and its concomitant secondary fault structure,but the advantage space of ore-body emplacement.We discuss the basic geological conditions,under which the main part of Jiapigou gold mine becomes a large northwestward ductile shearing belt and its concomitant secondary formation belt,northeastward formation belt（i.e. the ore bed in this area）,are widely distributed Archean metamorphic rocks,molten magma and dike,and strong ductile-brittle structure activity,the gold mineral body （quartz vein） is controlled by the secondary fracture on the both sides of the ductile shearing belt, and wall rock alteration is sericite-quartz alteration,silicification,chloritization and pyritization.The ore-exploration study demonstrates the deep part of the mineral bed in this area,has the same large ore-formation potentiality,so the deep part of mineral-bed ore-formation belt in Jiapigou area should be a good ore-formation prospect (the second ore-formation bench).

Key words:  , Gold ore-formation belt；Geological characteristics；Ore-formation conditions；Ore-exploration prospect；Jiapigou gold deposit