彩霞山铅锌矿原生晕地球化学特征及深部矿产评价

彩霞山铅锌矿是位于哈萨克斯坦-准噶尔板块南缘的热液型铅锌矿床。对其Ⅱ号矿体36号勘探线剖面的原生晕特征研究表明：1）矿体前缘晕元素为Cd、Hg、Zn、As、Cu，近矿元素为Ag、Pb、Sb，尾晕元素为Sn、Mo、W； 2）根据格里戈良分带指数法计算，其原生晕轴向分带序列（由矿体头部至尾部）为Zn-Mo-Hg-Cd-Cu-As-Ag-Sb-Sn-W-Pb。采用相关分析、聚类分析和因子分析方法研究了成矿元素与相关金属元素、主量元素之间的亲缘性，并建立了(Cd+Hg)/(W+Mo)、F₁因子以及主量元素Fe₂O₃、Na₂O 和Na₂O/K₂O等评价指标。根据各评价指标的分布特征，认为在矿体深部仍有良好的找矿前景。

Primary Halos Characteristics of Caixiashan Pb-Zn Deposit and Prediction for Deep Mineralization

Caixiashan hydrothermal Pb-Zn deposit is located at the south margin of Hazakstan-Jungar plate. The study of the primary geochemical halos of No.36 section in No.Ⅱ ore body shows that: 1)Cd, Hg, Zn, As, Cu are front elements. Ag, Pb, Sb are proximal elements while Sn, Mo W are tail elements of the ore body. 2)The axial zonation of the elements delineated by zonation indexes is as follows:  Zn-Mo-Hg-Cd-Cu-As-Ag-Sb-Sn-W-Pb. Multivariable statistical methods such as correlation analysis, cluster analysis and factor analysis were used to study the relationship among the ore0forming elements, associated elements and major elements and the corresponding evaluation criteria such as (Cd+Hg)/(W+Mo), F₁ factor，Fe₂O₃,Na₂O, and Na₂O/K₂O were built. The distribution of the criteria shows that the mineralization is prospective in the deep portion of  the ore body under study.