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云南墨江金厂外围观音山矿区土壤地球化学特征及其在寻找金、镍矿中的应用

Geochemical characteristics of soil in Guanyinshan mining area in the peripheral of Jinchang,Mojiang,Yunnan Province and its application in prospecting for Au and Ni deposits

  • 摘要: 在墨江金厂外围观音山矿区开展1∶10 000土壤地球化学测量工作,以确定有利成矿元素,缩小找矿靶区。对土壤地球化学测量样品分析结果进行数理统计,运用成矿元素地球化学特征进行多元统计分析、单元素及组合异常分析,圈定成矿靶区,并通过路线地质调查及地表工程加以验证。结果表明:观音山矿区Au及Ni元素为有利成矿元素,Au-Ag-As-Sb和Ni-Co-Mn-Cu组合异常可作为寻找金、镍的找矿标志;分别圈定了1处金成矿靶区和1处镍成矿靶区。通过工程验证,发现了6条金矿化带(脉)和5条镍矿化带。本次研究可为观音山矿区下一步找矿勘查评价及寻找金、镍矿提供科学依据。

     

    Abstract: 1:10 000 soil geochemical survey was carried out in Guanyinshan mining area in the peripheral of Jinchang,Mojiang,to narrow the prospecting target area and obtain favorable ore-forming elements.The results of soil geochemical survey samples are analyzed by mathematical statistics.The geochemical characteristics of ore-forming elements are used for multivariate statistical analysis,single element and combination anomaly analysis.The ore-forming target area is delineated and verified by route geological survey and surface engineering.The results show that Au and Ni are favorable ore-forming elements in Guanyinshan mining area,and Au-Ag-As-Sb and Ni-Co-Mn-Cu combination anomalies can be used as prospecting indicators for gold and nickel.1 gold ore-forming target area and 1 nickel ore-forming target area are delineated respectively.Through engineering verification,6 gold mineralization zones(veins) and 5 nickel mineralization zones are found.This study can provide a scientific basis for the next-step exploration and evaluation of Guanyinshan mining area and the search for gold and nickel deposits.

     

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