本文選題：原生地球化學(xué)異常 + 成礦成暈　； 參考：《礦物學(xué)報(bào)》2017年05期

【摘要】：新疆薩熱克銅多金屬礦床為近年來(lái)發(fā)現(xiàn)的砂礫巖型銅礦床。應(yīng)用相關(guān)分析、聚類(lèi)分析、因子分析等數(shù)學(xué)地質(zhì)方法,對(duì)鉆孔原生地球化學(xué)異常進(jìn)行了研究,研究了成礦元素組合和垂向成礦成暈分帶特征,進(jìn)而對(duì)砂礫巖型銅多金屬礦床的成礦成暈機(jī)理進(jìn)行探討。研究認(rèn)為,成礦元素Mo、Ag與Cu表現(xiàn)出良好的相關(guān)性,可作為砂礫巖型銅多金屬礦床的特征指示元素;成礦期熱液主要以中-低溫?zé)嵋簽橹?可能存在高溫?zé)嵋?成礦環(huán)境為沉積成巖型,同時(shí)Fe參與了砂礫巖型銅礦床的成礦成暈作用;元素Cu、Pb、Zn主要以硫化物的形式賦存,輝綠巖可能攜帶了大量成礦成暈物質(zhì),成礦元素富集可能經(jīng)歷了復(fù)雜的后期疊加改造作用;Cu-Mo-Ag為砂礫巖型銅礦體成礦元素組合,Sb-As-Pb為砂礫巖型鉛礦體成礦元素組合,Zn-Cd-Hg為砂礫巖型鋅礦體成礦元素組合。Ag、Cu、Pb、Zn、Mo、As、Hg、Cd、Sb元素在該區(qū)富集性強(qiáng),具強(qiáng)分異作用,顯示較強(qiáng)的后期改造作用,是該區(qū)的主成礦元素和伴生指示元素;鉆孔原生異常垂直分帶特征為上部元素組合為B-K-Cl型,成礦元素組合為Ag-Cu-Mo-Sr-As-Sb-Pb-Au-Zn-Hg-Cd型;下部元素組合可能為W,為具有顯著熱液疊加成礦元素組合特征,推測(cè)礦床存在多個(gè)成礦期次,深部可能存在盲礦體。
[Abstract]:The Sajek copper polymetallic deposit in Xinjiang is a sandboulite type copper deposit discovered in recent years. By means of correlation analysis, cluster analysis, factor analysis and other mathematical geological methods, the primary geochemical anomalies of boreholes are studied, and the characteristics of metallogenic element assemblage and vertical ore-forming halo are studied. Furthermore, the mechanism of ore-forming halo of gravel-type copper polymetallic deposits is discussed. It is considered that the ore-forming element Mo-Ag has a good correlation with Cu, and can be used as the characteristic indicator element of the gravel-type copper polymetallic deposit, and that the hydrothermal solution during the metallogenic period is mainly medium-low temperature hydrothermal solution, which may have high temperature hydrothermal solution. The ore-forming environment is sedimentary diagenetic type, and Fe is involved in the ore-forming halo of sandboulite type copper deposit, and the element Cu _ Pb-Zn mainly occurs in the form of sulphide, and diabase may carry a large amount of ore-forming halo material. The enrichment of ore-forming elements may have undergone a complicated late superposition transformation process: Cu-Mo-Ag is a combination of ore-forming elements of gravel-type copper bodies and Sb-As-Pb is a assemblage of ore-forming elements of sandstone-type lead ore-bodies. Zn-Cd-Hg is a assemblage of ore-forming elements of grit type zinc ore bodies. In this area, the enrichment is strong, The main ore-forming elements and associated indicator elements are the main ore-forming elements in this area, the vertical zoning characteristics of the primary anomalies in borehole are B-K-Cl type for upper elements and Ag-Cu-Mo-Sr-As-Sb-Pb-Au-Zn-Hg-Cd type for metallogenic elements. The lower element assemblage may be W, which is characterized by obvious hydrothermal superposition metallogenic element assemblage. It is inferred that there are many metallogenic stages in the deposit, and blind orebodies may exist in the deep part of the deposit.
【作者單位】： 昆明理工大學(xué)國(guó)土資源工程學(xué)院;有色金屬礦產(chǎn)地質(zhì)調(diào)查中心;
【基金】：行業(yè)公益性科研專(zhuān)項(xiàng)(編號(hào):201511016-1) 中國(guó)地質(zhì)調(diào)查局地質(zhì)大調(diào)查項(xiàng)目(編號(hào):12120114081501)*
【分類(lèi)號(hào)】：P618.41

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