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新疆萨热克铜多金属矿床为近年来发现的砂砾岩型铜矿床。应用相关分析、聚类分析、因子分析等数学地质方法,对钻孔原生地球化学异常进行了研究,研究了成矿元素组合和垂向成矿成晕分带特征,进而对砂砾岩型铜多金属矿床的成矿成晕机理进行探讨。研究认为,成矿元素Mo、Ag与Cu表现出良好的相关性,可作为砂砾岩型铜多金属矿床的特征指示元素;成矿期热液主要以中-低温热液为主,可能存在高温热液,成矿环境为沉积成岩型,同时Fe参与了砂砾岩型铜矿床的成矿成晕作用;元素Cu、Pb、Zn主要以硫化物的形式赋存,辉绿岩可能携带了大量成矿成晕物质,成矿元素富集可能经历了复杂的后期叠加改造作用;Cu-Mo-Ag为砂砾岩型铜矿体成矿元素组合,Sb-As-Pb为砂砾岩型铅矿体成矿元素组合,Zn-Cd-Hg为砂砾岩型锌矿体成矿元素组合。Ag、Cu、Pb、Zn、Mo、As、Hg、Cd、Sb元素在该区富集性强,具强分异作用,显示较强的后期改造作用,是该区的主成矿元素和伴生指示元素;钻孔原生异常垂直分带特征为上部元素组合为B-K-Cl型,成矿元素组合为Ag-Cu-Mo-Sr-As-Sb-Pb-Au-Zn-Hg-Cd型;下部元素组合可能为W,为具有显著热液叠加成矿元素组合特征,推测矿床存在多个成矿期次,深部可能存在盲矿体。
The Sagrek copper-polymetallic deposit in Xinjiang is a conglomerate-type copper deposit discovered in recent years. The geochemical anomalies of boreholes have been studied by means of mathematical geology such as correlation analysis, cluster analysis and factor analysis. The characteristics of metallogenic element assemblages and vertical mineralization are analyzed, and the characteristics of sandstone - conglomerate copper Metallogenic mineralization into halo mechanism to explore. The study shows that the metallogenic elements Mo, Ag and Cu show a good correlation and can be used as an indicator element of the conglomerate-type copper polymetallic deposit. During hydrothermal ore-forming period, the hydrothermal fluids are mainly medium-low temperature hydrothermal fluids, possibly with high temperature The hydrothermal and ore-forming environments are sedimentary diagenetic types, and Fe participates in the metallogenic halo formation of the conglomerate-type copper deposit. The elements Cu, Pb and Zn are mainly in the form of sulfide, and the diabase may carry a large amount of The metallogenetic element is a halo, and the enrichment of metallogenic elements may undergo complex post-superimpositional alteration; Cu-Mo-Ag is the ore-forming elemental assemblage of glutenite-type copper orebody, Sb-As-Pb is glutenite-type lead orebody Zn-Cd-Hg is the ore-forming element combination of glutenite-type zinc orebody. The elements of Ag, Cu, Pb, Zn, Mo, As, Hg, Cd and Sb have strong enrichment and strong differentiation in this area, indicating strong post-alteration and are the main ore-forming elements and associated The vertical banding characteristics of the primary anomalies in the boreholes are that the upper element combination is of the BK-Cl type and the ore-forming element combination is of the Ag-Cu-Mo-Sr-As-Sb-Pb-Au-Zn-Hg- The combination of elements may be W, which is characterized by a combination of mineralization elements with significant hydrothermal superposition. It is inferred that there are multiple mineralization stages in the ore deposit, and that there may be a blind ore body in the deep part.