| A lot of different precepts on tectonic units of Eastern Kunlun orogenic belt have ever been proposed by predecessors. However, the precept of three tectonic belts that are North Eastern Kunlun, Middle Eastern Kunlun and South Eastern Kunlun is still applied more frequently than others presently. Especially, according our several years'field survey and indoor analysis investigation on the Eastern Kunlun, Sun et al(2003) considered that the Eastern Kunlun should be divided into Caledonian back-arc rift belt of North Eastern Kunlun, basement uplifting and granite belt of middle Eastern Kunlun and composite collage belt of South Eastern Kunlun, which are divided by three North Eastern Kunlun, Middle Eastern Kunlun and South Eastern Kunlun faults respectively.On late Caledonian, the situation of three tectonic belts were formed. On Hercynian-early Indosinian, the Bayan Har oceanic crust was subducting obliquely northward. Until early late-Indosinian, the Bayan Har ocean closed, then the whole Eastern Kunlun orogenic belt and south of it diverted into intracontinental evolution. On late Indosinian, the Eastern Kunlun orogenic belt occurred strong interaction of crust-mantle, and the extruding environment transformed into spreading environment. A lot of mantle material and energy took part in the action of structure-magma and minerogenesis.The Wulanwuzhuer copper deposit lies in the north Qimantage granite belt of North Eastern Kunlun(early Paleozoic back-arc rift belt of North of Eastern Kunlun, Sun et al.,2003) near southwest Qaidam. The granites that outcrop in Wulanwuzhuer ore district largely are mainly late Hercynian-early Indosinian porphyritic-like granite body and granite body, late-Indosinian granite porphyry dyke and granitello dyke, Indosinian moyite dyke and Yanshanian porphyrodiorite dyke, and so on. There are many large-scale faults in the ore district, whose strike are mainly NW(F3), NEE(F4), NE(F1) and EW(F2). Those faults are mainly fragmentized alteration belts which intercross to form the system of net-stringer. However, in the ore district, the stratum can be seen rarely, and the Quaternary System only outcrops few in the south. The mineralized geological body are mainly fragmentized alteration belts and late-Indosinian granite porphyry dyke, and so on.The author twice respectively adopted geological profile survey in the trenches named TC2003 and TC2005 which pass across the mineralized geological body and sampled in order to grasp the mineralized geological body and structures controlling orebodies. The analysis of Cu, Sn, W, Au, Pb, Zn and so on indicates that Cu, Sn, W, Au are enriching strongly. We divided those enriching trace elements into Sn, W-Au, and Cu-Zn three element paragenesis basing on geochemistry section and correlation coefficient. Sn may represent the first stage of mineralizing hydrothermal activity; W-Au may the second; Cu-Zn may the third.The study of orebody's feature indicates that Cu-orebody and Sn-orebody which pitch eastwardly lie in the crossing of fragmentized alteration belts. The rocks mineralized of Cu-orebody are mainly silication granite, structure breccia, granite porphyry and sericitization monzonitic granite and so on; But the rock mineralized of Sn-orebody is mainly granite porphyry and so on.The study of metallogenic epoch proves that the Wulanwuzhuer copper deposit underwent meso-hyper hydrothermal metallogenic epoch and epigenetic metallogenic epoch. The former include cassiterite metallogenic stage when the Sn-orebody formed, wolframite-polymetal and chalcopyrite-polymetal metallogenic stages when Cu-orebody containing W, Au formed.The component analysis of typical sulfide indicates that the copper deposit formed in the meso-hyper reductive environment, and the mineralizing fluid was composed by magmatic hydrotherm which was the main and atmospheric water.The study of homogeneous temperature, salinity and density and component analysis of fluid inclusions which were obtained from silication granite that is related with Cu-mineralizing prove the result of component analysis further, and also indicate that the high-temperature and high-pressure fluid from magmatic hydrotherma encountered with atmospheric water when moving upwards, so the fluid boiled, and its salinity and density decreased. The analysis of fluid inclusions'pressure and mineralizing depth indicates that the Cu-mineralization underwent two metallogenic stages in meso-hyper environment.It was found that the type of alteration include silication,phyllition-like, potassion-biotition and argillization through the wallrock alteration's study of the ore district, which exhibits the alteration features of porphyry copper. But the mineralization mainly occurred in the silication belt whos scale is bigger than others largely, which is different from typical porphyry copper.The analysis of mineralizing geological condition especially ore district's geological condition indicates: The formation of the Wulanwuzhuer copper deposit was correlative with the interaction of crust-mantle which occurred in the spreading environment on late Indosinian affinitively; The granite porphyry contained abundant mineral material because of the interaction of crust-mantle, and it provided main hydrotherm, heat and mineral material for the mineralization.Through comparing the Wulanwuzhuer copper deposit with typical porphyry copper, it was found that they were similar in tectonic background, structures controlling orebody, intrusive rock's type, orebody's configuration, ore's fabric, average grade, wallrock alteration and mineralizing fluid, and so on, but they were different in mineral paragenesis, mineralized alteration belt, fluid inclusions'type, mineralizing pressure and depth, and so on.Basing on those analysis investigation, the author think that the type of the Wulanwuzhuer copper deposit is porphyry-like copper, tungsten, stannum deposit containing Au, which is controlled by faults strictly and correlative with Hercynian-Indosinian meso-acidic intrusive rock. Then, the mineralization mechanism and procedure of the copper deposit were discussed, and the mineralization pattern was set up.The uplifting velocity of the Wulanwuzhuer ore district that undergoes long-time denudation and lies in North sub-Qimantaga("ridge") after Cenozoic is rapid, and W, Sn-mineralization representing high temperature environment and granite batholith representing deep environment have outcropped, which indicate that the Cu, Sn-orebody may be denuded strongly. So, the copper deposit's mineralization condition is predominant, and the mineralizing information is better, but the degree of denudation is great, so the prospecting potential is less in depth.
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