| Shanjia copper deposit in weixi county,Located in the middle of tanggula-lanping-simao fold system,It belongs to the eastern part of the northwest end of the yunlong-jiangcheng fold of the lanping-simao fold belt.Although shangjia copper deposit in weixi county is a small deposit at present,it has a good prospect of prospecting.Based on the collection,collation and analysis of the previous studies,this paper conducts a detailed study on the geological characteristics of the ore deposit,the geological characteristics of ore body and the petrological characteristics through the field geological survey,discusses the ore-forming laws,and points out the prospecting direction,which is of certain significance for the deep and peripheral ore-searching of shanjia mining area and the expansion of resources.(1)Ore bodies are mainly distributed in nearly ns-trending main faults derived due to secondary fault fracture zone,occurs in lower cretaceous Jingxing group(K1j)and middle Jurassic flowers left group(J2h)a layer of powder quartz sandstone,limestone and sandstone,ore body size,shape,occurrence by their respective ore fractured belt scale,occurrence and control of the form.In F1,F2 and F3 ore-forming fractures were showing how sex,multiphase tectonic activity and deep under the action of hot brine solution,the formation of Cu element into the solution,as of ore-forming substances are added to the rich integrated metallogenic hydrothermal and metallogenic under the action of heat source in the big fracture dynamics to the shallow ore structure of regional metallogeny.To sum up,the genesis of this deposit belongs to medium and low temperature hydrothermal filling copper deposit.(2)According to the analysis of copper phase,copper ores in this area are two types of oxidized ore and sulphide ore respectively,and the main oxidation ore is over 2860 meters.The sulfide ore has reached the quality requirement of commercial concentrate through the process of "baking + wet process".After the acid leaching process,the technical indexes of Cu leaching rate 88.48%,acid consumption 217 kg/t and slag leaching Cu 0.40% were obtained.(3)Based on a comprehensive study of regional metallogenic background,geological characteristics of the deposit,metallogenic control factors,and genetic types of the deposit,it is believed that the four copper ore bodies found in the study area have prospecting prospects in both trend and tendency.Therefore,it is expected that the size of the deposit will be further expanded by increasing the control of the ore body. |
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