Element Geochemistry Characteristic And Deep Prospecting Prediction Of Yangshan Gold Deposit,Wenxian,Gansu

The Yangshan gold deposit is located on the northern edge of the Bikou block and is sandwiched between the Yangtze,North China,and Songpan-Ganzi orogenic belts.The gold deposits are mainly found in calcium argillaceous and silty phyllite.Due to the current difficulties in making breakthroughs in mineral exploration in the middle and shallow strata,geological,geophysical,geochemical,and other methods have shown that the orebodies are closed to deep strata and that there should be a large space for prospecting,so deep Mineral forecasting is particularly important.The work is based on the actual conditions of the Yangshan region's tectonic forms and complex phases.Geochemical methods have a significant effect in prospecting in the mining area.Therefore,this paper applies the original halo method to provide the basis for the deep mineral forecast in the Anba section of the Yangshan area.In summing up previous geochemical research results such as primary halos and structural superimposed halo,I collected primary halo samples based on the 17-26exploration line profile system,delineated relevant element isoline profiles,and conducted deep prediction work based on the anomaly characteristics of different elements.The positive correlation between arsenic elements and gold ore bodies was determined by statistics.Through the method of primary haloes,it was determined that the halo elements at the front of the Yangshan gold ore belt are arsenic(As),antimony(Sb),and mercury(Hg),which usually appear at the head of the ore body;the near-mine element is silver(Ag).,copper(Cu),lead(Pb),zinc(Zn),the exposed elevation is consistent with the ore body;tail elements are Bi,cobalt(Co),manganese(Mn),molybdenum(Mo),usually appear At the tail of the ore body.On this basis,the characteristics of the mineralized body in the Anba ore belt of the Yangshan gold deposit have been identified to the west,and deep metallogenic predictions have been made for the exploration lines 17,6,2 and 1 through the elemental isoline maps.Mine veins have the potential to extend downwards.The exploratory project for the construction of the No.10-38 line in the Anba-Gegeow Bay section has been completed,and the structurally superimposed halo samples have been collected for the purpose of the mineralized and altered crush zone to carry out metallogenic prediction.The structure superimposed halo patterns and characteristics of the Anba section of the Yangshan gold ore belt have been established,and the relevant criteria and standards for deep prediction have been determined.The mineralization predictions were made in the deep part of the exploration lines on the 10th,30th,26th,18th,14th,and 13th lines,and it was concluded that the 311,325,336,327,364,305,362,366,and 364 veins were all different.There is a blind orebody in depth.In this paper,through the combination of primary halo and structural deep-horizon exploration line deep prediction results,the prospecting prediction of veins 364 and 311 is mainly carried out.The prediction target of vein 364 is at depth of 1154-1679m,and the area is 0.2km~2.The prediction target of vein 311 is 1021-1332m depth,area 0.092km~2.