| The region structure of our study is located from Three-river Metallogenic belt to the west margin of the Yangtze platform. Now we have found the large-scaled copper deposits in Pulang and Yangla,middle-scaled copper deposits in Xuejiping, Hongshan and Tuoding, small-scaled copper deposits etc. But there is not large copper deposits has been found in Sichuan province. What cause the obviously different of deposits located? The problem of the potential deposits of Sichuan province and deposits prospecting target is the domestic deposit experts main concerned. It's actually included three distinctively different structure units. (the piedmont of Queer–Shaluli mountain,the arc-inside rift valley of Changtai-Xiangcheng,the arc-back basin of Yidun), the ecologic evolvement's differences of different structure units must lead to the difference of it's deposits forming character., and there will must be different method of deposits-finding and deposits-forecasting accordingly.This region have a complicated geologic evolvement history. Now it has formed the complicated complexion of deposits distributing with deposits-forming of different geologic period and different structure condition. Although it has great evolvement of deposits-finding work of Yunnan province which is nearby, but the deposits-finding work of Rexiang-Rirongcuo area of multi-metal deposits is still in the underway extent .Dose the porphyritic belt of copper deposits of Xuejiping-Pulang stretched to the north? Is it likely to find copper deposits of Yangla type in Sichuan area of Jinsha structure belt? It is necessarily to make some contrast study in geologic background and conditions of deposits-forming with the nearby area of Yunan province. The potential of every deposits-forming is need much more estimated in our study area.The study of this article is located in the long-dated deposits forming area of multi-metal in Shuiwa of Xiangcheng-Qingda-Zhujiding of Daocheng-Zaodui, which is one of the important deposits-forming belt of Sichuan province. We summed up the deposits type and formation time of copper deposits of Rexiang, lead-zinc multi deposits of Baiyandi(Qiangda), copper-molybdenum-antimony deposits of Hongcuo by deeply study in the geologic background of deposits-forming in our study area. We use the method of soil geochemistry information integrated disposal of Rexiang copper mine, Baiyandi(Qingda) lead-zinc multi-metal mine, and the mine of Rirongcuom, and with the way of EDA(Exploratory Data Analysis), to statistic the amount of Cu,Pb and Zn in the above three areas. We also selected and annlysis these geochemistry information to estimate the deposits-forming prospect of these areas.(1) The copper deposit of Rexiang is the magma type deposit, and it has congruence effect of deposit-forming; Baiyandi lead-zinc mutil-metal deposit is belonged to the conformation filling deposit, which is related to the porphyry of the time of late-Yanshan to Xishan. The copper deposit has the deposits-forming character of stratum-structure-magma rock-corroded hydrothermal liquid. The deposit-forming age which is measured by U-Pd method is 79.10±0.55Ma; Stannum mine of Hongcuo is belonged to high temperature gas-formation magma hydrothermal liquid type, copper-molybdenum- antimony mine of Hongcuo is belonged to magma hydrothermal liquid type.(2) Statistic the soil geochemistry amount of Cu,Pb,Zn in Rexiang copper mine, Baiyandi(Qingda) lead-zinc multi-metal mine, and the mine of Rirongcuo, with the method of EDA(Exploratory Data Analysis).①The whole data of background-value in Baiyandi(Qingda) lead-zinc multi-metal deposits are 24.6ppm,61.2ppm and 146.5ppm, which is 23.9ppm,68.5ppm and 173.5ppm in the south area, and 25.1ppm,57.25ppm and 135ppm in the north area. The whole data of lower limit of abnormity are 66.75ppm,197.5ppm and 362.7ppm,which is 53.45ppm,245.05ppm and 488ppm in the south area, and 80.8ppm,176.25ppm and 323.35ppm in the north area.②The Cu,Pb and Zn background-values of soil geochemistry in the area of Rirongcuo are 17.8ppm,33.1ppm and 109ppm, the decided lower limit of abnormities are 50.95ppm,101.8ppm and 300.3ppm.③The Cu,Pb and Zn background-values of Rexiang copper mine are 30ppm,32.9ppm and 78.7ppm. The decided lower limit of abnormities are 99ppm,71.5ppm,157ppm. (3) We circled 22 target area based on the analyse and estimate of soil geochemistry abnormity of Cu,Pb,Zn in Rexiang copper mine, Baiyandi(Qingda) lead-zinc multi-metal mine, and the mine of Rirongcuo.
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