Metallogenic Geological Conditions And Prediction Of Copper Polymetallic Deposits In Xiajiale Areas,Xinlin District,Heilongjiang Province

The research area is located in Tayuan Town,Daxinganling,Heilongjiang Province.The tectonic location is located in the Xingan-Inner Mongolia trough fold zone,the southern section of the Erguna block and the southern margin of the Daxinganling fault depression(volcanic belt),belonging to the Xinbaerhu Youqi-Genhe metallogenic belt(grade ?)and Xinlin metallogenic belt(? grade)and Ta yuan Cu-Pb-Zn-Au-Mo ore district,the geological structure in the area is complex,the Mesozoic magmatic activity is strong,and the Taoyuan two-line skarn copper-gold-silver deposit and the Tayuan sub-volcano hydrothermal veins gold-silver copper deposit are developed in the adjacent area,which has good geological conditions for ore-forming.In the study area in the north east to distribution of taha river fracture control of the Mesozoic volcanic basin and intrusive rocks of the space distribution,important for regional ore-controlling structures,while the AuCu polymetallic mineralization concentrated in the north and south and north west to the two groups in the secondary fracture formation fracture or fracture zone,for the important ore,lead ore structures.Geochemical survey results show that the study area,Ag,Cu,Pb,the average contents of zinc,Mo,W are higher than the average contents of severe volcanic rock belt,and the Mesozoic volcanic rock formation,corresponding to Au polymetallic mineralization provides ample material base,yanshan epoch high-precision magnetic survey also showed that the characteristics of low resistivity,yanshanian magmatic hydrothermal activity after the formation of the ore-forming matter activation,in the near surface fracture,fracture zone form vein orebody enrichment.This study through geochemistry,geophysics and typical ore deposit metallogenic geological conditions of the comprehensive comparison,the area source AuAgCu deposit metallogenic geological conditions and the tower is comparative,Au,Ag mineralization elements such as high background field also indicates the area for Au and Ag polymetallic mineralization favorable location,prospecting work should concentrate on volcanic mechanism and fracture joint control area,close to yanshanian volcanic eruption of volcanic hydrothermal vein type Au polymetallic deposit for important prospecting direction in this region.