Enrichment Law And Ore-prospecting Direction Of Dajia Gold Deposit In Huadian Area,jilin Province

The Liuhe high-grade metamorphic area in Huadian area of Jilin Province is adjacent to the Jiapigou gold mineralization district,and is another important gold producing area in the south of the Jiapigou gold belt.Especially the discovery of the Dajia altered rock-type gold deposits,it makes a breakthrough in finding medium and large gold deposits in the Achaean high-grade metamorphic area.Due to its high grade,stable ore body and simple mineral processing,ever since it was discovered,the Dajia gold deposit has been one of the key mining areas in Huadian area.On the basis of collecting the relevant geological and exploration data in the past,this article analyzed the geological background,geophysical and geochemical data of Dajia gold deposit.By researching of the geological characteristics of deposits,systematically summarize enrichment law and ore-prospecting marks of main ore bodies at surface and depth in mineralization alteration zone I and II,and clarify the direction of further ore-prospecting.The researches in this article show that the NW brittle ductile shear zone is the main ore-controlling and mineral bearing structure of ore bodies,fine-grained diorite,silication and chloritization have close relationship with orebodies,they are the direct marks of surface or deep prospecting.High intensity Au element anomaly,high resistance high polarization anomaly,low or negative magnetic anomaly can be used as indirect signs of finding surface or hidden ore bodies;650-100 m is the main concentration elevation of the blind ore body and should be used as the direction and preferred location for further prospecting.