| River Gelebil located in the southeastern part of the county,the administrative division is under the jurisdiction of xunke county of heihe city.Tectonic position in heilongjiang province mineral resources potential evaluation view(2012),-magmatic arc kiamusze,xiao xing xiao xing-ZhangGuangCaiLing subduction collision type volcanic intrusive rock belt,yichun,prolong life metallogenic belt long geological history,complex structure,magmatic activity is frequent,medium-large ore deposit distribution,metallogenic potential is tremendous.This topic by the heilongjiang province's than le river gold polymetallic study project as the backing,and analyzes two typical deposits as the research object,summarizes the gold deposits in the metallogenic characteristics and prospecting marks,in combination with geological,geophysical and geochemical characteristics of the study area,on the basis of comprehensive prospecting information,surface inspection of geophysicalgeochemical anomaly area,optimizing the ore-forming potential area,provide prospecting target areas for further work.The genetic types of dongan gold deposit and gaosongshan gold deposit in the typical deposits in the area are shallow low-temperature hydrothermal gold deposits.The ore body is controlled by fracture structure,and the early cretaceous volcanic rocks are closely related to mineralization.The types of surrounding rock alteration are mainly silicified,ice long petrified,sericite,chlorite,carbonated,etc.The ore has typical breccia structure,vein,net vein structure,banded structure and so on.The main main outdoor floor is: under the lower Cambrian division lead mountain formation,lower Permian series of ridge group,lower cretaceous ningyuan schiscosomiasis,lower cretaceous construct in a systematic way hing group,lower cretaceous ganhe group,gradually new-new under the sun wu group,the quaternary system update,bear mountain basalt of the middle pleistocene series in leshan group and the holocene high floodplain,low floodplain.Among them,the Mesozoic cretaceous system under ningyuan schiscosomiasis acid tuff is chloritization,and sericitization,ice feldspathization,silicification and pyritization rock alteration influenced by the late hydrothermal process,part of the visible beige quartz vein along the crack distribution,is to look for low temperature hydrothermal gold ore body position;The fault of kuerbin fault in the region and the fault of the gelebil river in the region is the main structure of the mineralization.Intrusive rock is relatively developed,the main show NNE or nearly SN to exposed,mainly into granite,among them,the long coarse alkali granite in the late Triassic is the main ore rock gold mine,the rock mass has the characteristics of the continental margin magma,the original rock had a higher degree of jinfeng,through the analysis of the geochemical characteristics of stream sediment survey 9,multielement composite anomaly element anomaly ring order 383,including 50,Au anomalies delineated abnormal 10 combination,through the surface pit reveals that gold mineralization body is delineated four,three gold orebodies,provides further work the second skin of hedong hexi two,two skin ? metallogenic prospect areas. |
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