Metallogenic Regularity And Prospecting Of Gold Deposits In Yulin Area,Shandong Province

The study area is located in Yulin area,Located in Pingyi County,Shandong Province,about 30 km to the South and east of the city,covering an area of 431 square kilometers,the administrative division is subordinate to Pingyi County,Tongshi Town.After several gold deposits(spots)have been found and evaluated in the geological exploration and research area in recent years,six types of gold deposits have been concluded: vein structure-cryptoexplosive breccia type(Guilaizhuang gold deposit),layered carbonate rock type(Eastern Dawan gold deposit),interbedded breccia type(Wangjiacun gold deposit),altered porphyry vein type(Yindonggou and Zhang-Li-Dongling gold deposits),tubular structure-cryptoexplosive breccia type(Zhuojiazhuang gold deposit),skarn type(Shizizhuang gold deposit),the proven gold metal amount exceeds 50 t,indicating that the area has superior mineralization Geological conditions.This paper makes full use of the comprehensive research means of "systematic data collection,geological characteristics analysis of typical deposits,metallogenic regularity,induction of prospecting indicators and prediction of prospecting direction",and carries out work step by step according to the technical route established by the research,and achieves certain results: from strata,structures,magmatic rocks and geophysical characteristics.In terms of geochemical characteristics and other aspects,the metallogenic geological background of gold deposits in Yulin area has been sorted out,and the metallogenic geological conditions of regional gold deposits have been understood.All mineralization types in the study area have been systematically summarized.The mineralization types have been analyzed from the aspects of ore body characteristics and ore characteristics,and the plane distribution law of ore bodies,ore body characteristics and so on.The metallogenic regularity of gold deposits in the study area is summarized in relation to strata,distribution of tectonic fissures and mineralization alteration.Based on the metallogenic age,ore-hosting horizon,hydrothermal source and rock mineralization alteration of various mineralization types in the study area,the formation causes of the deposits are analyzed,the metallogenic regularity and prospecting criteria are summarized,and preliminary studies are established.Three-dimensional gold deposit metallogenic model in Guilaizhuang area;from strata,structure,magmatic rocks,rock alteration,geophysics,geochemistry and other aspects,the exploration indicators of the study area are summarized.It is pointed out that the next step of prospecting is mainly in the deep part of Guilaizhuang gold deposit,taking into account the peripheral Guilaizhuang-cross-zhuang fault zone,Dongjinchi and Xijinchi,which are regional gold prospecting.The investigation and deployment provide a reliable basis.