Geological Characteristics And Metallogenic Prediction Of The Aobotu Lead-zinc-sliver Deposit, Daxinganling

China has been staying the critical stage for process of industrialization. The demand of the lead,zinc and silver would grow continuously, which makes the exploration of these ore deposit become significantly important. Lead-Zinc-Sliver deposit of Aobaotu is a medium temperature magmatic hydrothermal deposit that is typical for the non ferrous ore deposit at the middle section of Daxinganling. Currently, The size of the ore could be categorized as medium and there are a few anomalies around the ore body, especially for the western section which display a good potential for exploration. Thusly, study of the Aobaotu would assume an important role for the mineral exploration for the whole area.Based on the previous research and the filed investigation with sample analyzing, we characterized the geological patterns of the ore deposit. With the help of the geophysical technology and geochemistry analysis and the comparison with DJIV anomaly around Aobaotu, We predicted two potential areas for the ore deposits and designed two drilling projects.These conclusions was presented by this study:(1) Aobaotu zinc-lead-silver ore deposit is a typical medium temperature magmatic hydrothermal deposit, which is mainly preserved in the host rocks of Jurassic system of sandstone an d Fine grained sandstone with the shape of vein.(2) DJIV anomaly zone covers the most area of ore deposit with good contiuity There are sever center of anomaly with the trend of W-E and low electrical resistivity and high polarizability which would be important for mineral exploration at outside area in the future.(3) the granite of mine area of Lead, Zinc and Silver of Aobaotu is a series of high potassium calc alkaline and a series of potash calcium. granodiorite-porphyry at mine area are closely related to mineralization(4) ore deposit is mainly from the deep magma and upper mantle, which is influenced by the Oregon movement.(5)with enrichment of chlorine in high temperature at comparative reducing environment, it has the same originating area of gra nodiorite-porphyry and mixed with the fluid of positive anomaly of Eu and negative anomaly of Ce.(6)DJII of the western section of the mine are was the important targeting area. It is extent to North-East direction of low-medium electrical resistivity, low deep preserved and large area, with good combination of all elements. Thusly, anomaly zone was set up in North and South predicting area and the trail drilling has been designed.