LITHOGEOCHEMISTRY OF THE JINHONG LEAD-ZINC OREFIELD IN HUIZE AREA, YUNNAN PROVINCE: A Case Study of Chejiaping Area
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摘要: 滇东北地区是我国铅、锌、银的重要产地之一，已发现铅锌矿床、矿点和矿化点多处.车家坪位于会泽县金红地区，该矿区距矿山厂、麒麟厂等大型铅锌矿较近，具有极大的找矿潜力.以车家坪地区为例，在详实的地质工作基础上，开展1：10000大比例尺岩石地球化学找矿工作.选用迭代法确定背景值和异常下限，确定Pb、Zn、As、Cu、Cd五个元素组合作为本次研究的最佳指示元素.通过分析岩石地球化学异常形态、规模、浓度分带等，圈定找矿靶区3处，为寻找盲矿体，缩小靶区提供依据.Abstract: Northeastern Yunnan Province is an important region for lead, zinc and silver resources, with quite a few Pb-Zn deposits and mineralized spots. Chejiaping area in Huize is close to the large Pb-Zn mines such as Kuangshanchang and Qilinchang, with great prospecting potentiality. On the basis of detailed geological work, the 1:10000 scale geochemical survey is carried out in the area. The iteration method is adopted to determine the background value and anomaly threshold, with the assemblage of Pb, Zn, As, Cu and Cd as the best indicator. By analysis on the geochemical anomaly shapes, scale and zonation, 3 prospecting targets are delineated, which will provide basis for the searching of blind orebodies in the area.
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Key words:
- geochemical survey /
- Pb-Zn deposit /
- Chejiaping /
- Yunnan Province
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