Research On Geochemical Anomaly Verification And Metallogenic Potential Of Jiayin Anomaly Verification Area In Heilongjiang Province

In heilongjiang province,a large number of mining sites,mineralized information and geochemical anomalies have been found in the 1:50,000 regional geological mineral survey in heilongjiang province,and 90%of geochemical anomalies need to be verified.The geochemical exploration method has been one of the important means of mineral exploration,and geochemical anomaly is an important basis for geological prospecting.The geochemical prospecting method is simple,the cover area is large,the element content is accurate,the expression way is intuitive,the prospecting target is clear;Geochemical anomalies are closely related to minerals,and almost all of the surface deposits and mines are surrounded by a large number of multi-element combination anomalies.The Geochemical anomaly check-up area in Jiayin anomaly verification area is located at the junction of the Bria-Jiamusi Landmass and the Zhangguangcailing orogenic belt,with a long history of geological evolution,complicated geological structures and rich mineral resources.Volcanism and magmatism are developed.Especially in the early stage of Yanshanian magmatic activity is very strong,which provides a favorable hydrothermal source for gold metallogenesis.There are many gold deposits,ore deposits and anomalies.The early Yanshan magmatic activity at the northern end of the Yugang-Zhangguangcailing polymetallic metallogenic belt is very strong,which provides a favorable source of heat and material for the gold and polymetallic metallogeny.The polymetallic ore prospecting prospect in some areas is Yichun-Yanshou polymetallic Metallogenic belt on the important part.The regional strata have been exposed to the new world.The regional intrusive rocks are developed from neutral intrusive rocks to acidic intrusive rocks.It is found that NNE or near SN has a large area of dew along the east side of the tongwang river fault,and the intrusive rock type is more complex.The old base inheritance structure controls the spread of yanshan period magmatic rocks.Regional structure mainly for north east,near sn,north east to construct tangwanghe has faults,basic distribution along the tangwanghe has river valley,nearly ns-trending fault for jiayin-mudanjiang tectonic sutures in kiamusze-xing kai plot and yichun-ZhangGuangCaiLing epicontinental tectonic belt transition zone.The distribution of strata and intrusive rocks is determined by geological survey in 12 verification zones.The magnetic characteristics of each verification zone are determined by high precision magnetic measurement.The electric field characteristics of each verification area are identified through the measurement of the excited electric ladder.The soil measurements of the combined anomaly and the single element anomaly.See mine situation outlined below are verified through the engineering,and 11 verification area:article 1 depending on the thickness of 3 meters for delineating lead industrial grade of ore body,the ore body and deep drilling in the lead,zinc,silver industrial grade ore body are connected as 1 ore body;A lead-mineralized body with a thickness of 7 m,containing 2 low-grade lead low-grade orebodies with a thickness of 1 m;In the borehole,one is defined as 2.5m gold industrial grade ore body and 2 gold mineralization;The 2 pieces of lead-industrial grade ore body with a thickness of 1.95 m and 2.0m respectively;3.The low-grade orebodies of the lead are 1.73 m,2.0m and 1.0m respectively.There are also 1 lead mineralization.Verification zone:2 gold deposit(ification),1 gold mine(melt)of 4 meters thick,1 gold industrial grade orebody with a thickness of 2.20 meters;1 gold mineralization for 1 m thickness.8.Identification zone:nine molybdenum mineralized bodies,4 low-grade ores of molybdenum,1-3 meters thick of the ore body;A silver industrial grade ore body with a thickness of 1.3 meters;1 silver low-grade orebody with a thickness of 1 m;To identify 1 lead mineralized body;In the borehole,one of the lead-zinc silver industrial grade with a thickness of 3 m is determined.A low grade ore body with a thickness of 0.96 meters in thickness;Circle 6 zinc mineralization.Identification zone:a mineralized body with a thickness of 6.3 meters,including 1 low-grade orebody with a thickness of 1.6 meters.Through the verification work of jiayin area anomalies with qualitative and quantitative understanding and the understanding,has carried on the preliminary evaluation of prospecting potential,provides five of prospecting target areas,to further work has a guiding significance to the next step prospecting work.Geochemical anomalies to verify the theoretical basis for exploration geochemistry,development has been gradually mature and perfect,become one of the important methods for mineral exploration and metallogenic prediction,the geochemical anomalies as an independent discipline to become an important part of the study area.