Characteristics And Ore Prospecting Mark Of Dagele Gold Polymetallic Deposit In Duolan County Of Qinghai Province

In this region,the fault structure is relatively developed,with the north east-trending fault as the main fault,followed by the nw-east trending fault,and the north east-trending fault as the main fault.The wulonggou gold deposit has been discovered and evaluated,and many gold deposits and a number of polymetallic deposits such as copper,lead,zinc and molybdenum have been found.The main intrusive rocks in and around the study area are proterozoic,caledonian and indochinese,forming a huge and complex tectonic magmatic belt in east kunlun area,which is dominated by proterozoic and distributed in nw.The rocks of different stages are superimposed and interwoven with each other.It plays an important role in the formation of skarn type deposit and tectonic hydrothermal type deposit.Located in the golmud-wulonggou metamorphic rock belt,it is the main gold and polymetallic ore host strata.Magmatic rocks in the study area have a large distribution area,and stratigraphic xenoliths of different sizes are often distributed in the proterozoic intrusions,which is an important favorable area for mineralization.The paleoproterozoic jinshuikou group of baishahe formation?Pt₁jb?has been found in the research work.It is exposed in the east-central part of the working area and distributed in the north-west direction.The gold,silver,copper,lead and zinc ore bodies in the area mainly come from cataclastic rocks in the tectonic fracture alteration zone.Ore types are mainly oxidized ore and primary ore.The surface of the circled gold,silver and zinc ore bodies is generally subjected to different degrees of oxidation,with depths ranging from 5 to 10m.This kind of ore is an important ore type in the area,and the oxidation ore is yellow-brown,light green,zhu red,etc.,which is honeycomb shaped.The grade of ore after oxidation is relatively high and there is obvious secondary enrichment phenomenon.The main metal minerals in the ore are limonite,and there are many kinds of metal minerals,such as sphalerite,galena,white lead,pyrite,limonite,arsenopyrite and skolinite,followed by calamine,chalcopyrite and pyrrhotite.The nonmetallic minerals are mainly quartz,dolomite,calcite,gypsum,sericite,Muscovite,sodium ettrum,etc.Less primary ore is found.Metal minerals are mainly sphalerite,chalcopyrite and natural copper,followed by pyrrhotite.Gangue minerals for quartz,calcite,gypsum,sericite,Muscovite,sodium iron and so on.