滇东会泽地区下寒武统筇竹寺组黑色岩系微量元素异常特征及成矿意义

华南扬子地块下寒武统黑色岩系与多种金属—非金属矿床的形成关系密切。近年来，滇东下寒武统筇竹寺组黑色岩系矿床勘查已取得一定成效，仍有极大的潜力。从成矿元素富集系数（K）、后期叠加强度（D）和成矿元素变异系数（CV）等方面分析了其含矿性。结果表明， Zn、Pb、B、U、Sn、Li、Cs、Tl、Mo、Rb、Cu、V和Th强烈富集，Sr和Mo后期叠加作用强烈，Mo具有极强的变异。地层含矿性综合评价表明，Mo是该区最优势的矿种，其次为Cu、V、U、Sn和Tl，再次为Pb和Li，而Sr、Zn、B、Th和Rb也具有一定的成矿能力。根据R型聚类分析，可以将成矿元素划分为5组：Rb、Th、Li、B、Sn、U和Tl， Cu，Pb和Zn，V和Mo，以及Sr。其中，Rb、Th、Li、B和Sn可能来自于海水，且与黏土矿物的吸附有关；V和Mo受控于还原的沉积环境；Cu、Pb和Zn受控于热水沉积作用；Sr与方解石密切相关。该研究可能有助于指导滇东地区筇竹寺组黑色岩系的矿床勘查。

Trace Element Anomaly Characteristics and Metallogenic Significance of The Lower Cambrian Qiongzhusi Formation from Huize Area, Eastern Yunnan Province

The black rock series of Lower Cambrian in the Yangtze block in South China is closely related to the formation of various metal-nonmetal deposits. In recent years, some breakthroughs have been made in the exploration of the black rock series deposits of the Lower Cambrian Qiongzhusi Formation from Huize area, and there is still great potential. The ore-bearing properties were analyzed from the aspects of the enrichment coefficient of ore-forming elements (K), the intensity of late stacking (D) and the coefficient of variation of ore-forming elements (CV). The results show that Zn, Pb, B, U, Sn, Li, Cs, Tl, Mo, Rb, Cu, V, and Th are strongly enriched, Sr and Mo are superimposed in the late period, and Mo has a very strong variation. The comprehensive evaluation of the mineralogy of the formation shows that Mo is the most dominant mineral in the area, followed by Cu, V, U, Sn and Tl, and again Pb and Li, while Sr, Zn, B, Th and Rb also have certain metallogenic capacity. According to R-type cluster analysis, ore-forming elements can be divided into five groups: Rb, Th, Li, B, Sn,U,Tl; Cu;Pb, Zn; V, Mo; and Sr. Among them, Rb, Th, Li, B and Sn may come from seawater and are related to the adsorption of clay minerals; V and Mo are controlled by the reduced deposition environment; Cu, Pb and Zn are controlled by hot water deposition; Sr and Calcite is closely related. This study may be helpful to guide the exploration of the Qiongzhusi Formation black rock series in eastern Yunnan.