河北省崖门子地区土壤地球化学特征及银多金属矿成矿潜力

    Soil geochemical characteristics and mineralization potential of silver-polymetallic deposits in Yamenzi area, Hebei Province

    • 摘要: 崖门子地区位于华北板块北缘中段的燕辽成矿带内,该带是我国重要的有色和贵金属成矿带,具有较好的火山—次火山岩型银多金属矿成矿地质条件。为进一步优选找矿靶区并评价其找矿潜力,本文在崖门子地区开展了1∶1万土壤地球化学测量工作。通过对测试的12种元素进行数理统计分析和衬度异常圈定,得出Ag、Pb、Zn、Au是区内的主要成矿元素。根据成矿地质背景以及各元素异常套合情况,共圈定出5个找矿靶区,经探槽和钻孔工程验证后揭露到多条银铅锌矿(化)体。综合对比崖门子矿体与山西支家地银铅锌矿成矿模式,二者具有相似特征,因此进一步加强崖门子地区成矿规律研究有望找到更大规模的矿体。

       

      Abstract: The Yamenzi area is located within the Yanshan-Liaoning metallogenic belt in the middle segment along the northern margin of the North China plate. This metallogenic belt serves as an important one for nonferrous and precious metals in China, characterized by favorable geological conditions for volcanic to subvolcanic silver-polymetallic ores. To further optimize targets and evaluate their potential for ore prospecting, this study conducted a 1∶10,000 soil geochemical survey in the Yamenzi area. By analyzing mathematical statistics and delineating anomaly contrasts of the 12 testing elements, silver (Ag), lead (Pb), zinc (Zn), and gold (Au) were identified as the primary metallogenic elements of the area. Based on the metallogenic geological setting and the coincidence of element anomalies, five prospecting targets were identified. Subsequently, these targets were verified by trenching and drilling engineering, revealing multiple Ag-Pb-Zn orebodies. A comprehensive comparison revealed similar patterns of Ag-Pb-Zn metallogenic belts between the Yamenzi in Hebei and Zhijiadi in Shanxi. Therefore, further investigating metallogenic regularity within the Yamenzi area could potentially guide the discovery of larger-scale orebodies.

       

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