喬夏哈拉式鐵銅金礦成礦模式及其找礦意義(文件)
【正文】 Qiaoxiahala, has similar geological features to Qiaoxiahala, indicating its Cu potential in the deep. It suggests the further potential of prospecting for Qiaoxiahalatype FeCuAu deposits to its southeast in the northern margin of Junggar.7 / 7。 ②magnetic: TEM had low response value, high magnetic anomaly, middlehigh electrical resistivity, and low polarization value。 d34S of chalcopyrite ranged between +‰~+‰ at the average of +‰, indicating sulfur in pyrite and chalcopyrite sourced from the mantle (Li Taide, 2002). On lead isotopes, 206Pb/204Pb of pyrite was ~, 207Pb/204Pb was ~, 208Pb/204Pb was ~, and the value of m was ~, indicating the feature of normal lead (Wan Bo et al., 2006). Meanwhile on isotopes, d18OH2O of magnetite was +‰~+‰, +‰ at average, in the range of original magmatic water. dD of gasliquid inclusions in magnetite was ‰~‰ relating to meteoric water. It suggested hydrogenoxygen in magnetite sourced from volcanic gas erruption, but contaminated by meteoric water in the deposition process (Li Taide, 2002), and also indicated the minerogenetic fluid derived from magmatic water and meteoric water (Peng Shenglin et al., 1996). Prospecting model Prospecting model of mineral deposit type can consider from the following aspects: geological condition, history criteria for prospecting, geophysical criteria, geochemical criteria, remote sensing information criteria and surface criteria for prospecting.(1) Geological condition: ①tectonic setting: the Qiaoxiahala FeCuAu deposit located in the Ertix mixing belt。 Ma, indicating the major iron minerogenetic period concentrated in Devonian. At the aspect of regional minerogenetic tectonic background, the tectonic location of the Qiaoxiahala ore deposit was argued according to different geologists: 1)Siberia plate→Altay continental crust part→Ertix Pz2 early exssentioned continental margin magmatic belt (Xiao Xuchang et al., 1992)。FeCu174。4. Bureau of Geology and Mineral Resources in Xinjiang, Wulumuqi, 830000Abstract: The Qiaoxiahala FeCuAu deposit as a typical ore deposit presents Qiaoxiahalatype mineral deposits, a group of FeCuAu deposits related to volcanism in Early Paleozoic. This paper has expounded the describing pattern, minerogenetic pattern and prospecting model of Qiaoxiahalatype mineral deposits in details.Key words: Qiaoxiahalatype, model of mineral deposits, minerogenetic series of mineral deposits, mineral deposit type1 IntroductionMinerogenetic series of mineral deposits presents a natural group of mineral deposits with genetic relationships formed at a certain geological period or a tectonic movement stage in a certain geological unit and a certain tectonic position under a certain mineralization (Chen Yuchuan et al., 2007). It is a brandnew natural classification of mineral deposits. Minerogenetic system includes five order classes of units: minerogenetic series association of mineral deposits and minerogenetic series type of mineral deposits。喬夏哈拉式鐵銅金礦在華力西期構(gòu)造活動(dòng)帶的島弧帶基性火山巖系中比較有利于成礦。(6)地表找礦標(biāo)志：在喬夏哈拉東礦區(qū)和西礦區(qū)地表能見到磁鐵礦鐵礦(化)體露頭。這一特征為在該地段尋找新類型的礦體提供了較為有利的信息鄧吉牛，王軍升，廖啟林. 2000. 布爾根礦帶金
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