应用壤中气汞量测量找金的效果——以湖南青京寨、三德堂金矿为例

湖南青京寨和三德堂分别为破碎带蚀变岩型，残积红土型金矿床。地表存在较厚的残（坡）积覆盖层，应用壤中气汞量测量法寻找隐伏含Au构造蚀变带及金矿体。区内气汞异常带及其峰值与隐伏含Au构造蚀变带及金矿体具有较好的对应性，利用这种对应性并结合区内地质，地球化学特征，施工适当的工程进行验证。在青京寨对6条气汞异常带进行工程揭露验证，各带均发现含Au蚀变带。三德常矿区圈定的金异异常与气汞异常基本一致。壤中气汞量测量法不仅适有于寻找中代温热液型金矿床，而且也适于寻找刚化残积型金矿床。

Gold hunting effect of gas-mercury measurment in soil:Taking example of Qingjingzhai,Sandetang gold deposits, Hunan

Hunan Qingjingzhai and Sandetang gold deposits belong to fractuned aleration rock type gold deposit and residual red soil type gold deposit respectively.There covered thick residual and slide rock layer on the surface,we can use the measurement method of gas mercury in soil to find concealed gold bearing tectonic alteration belts and gold deposits.In the two areas,the anomalous belt of gas mercury and its peak value have good correspondence with concealed gold bearing tectonic alteration belts and gold deposits.Some adequate projects are made to practice this by way of the correspondence and combination with the geology and geochemistry character of the two areas.Six gas mercury anomaly belts are opened and practiced at Qingjingzhai and gold bearing alteration belts are found in every anomaly belt.At Sandetang,the gold anomalyis nearly uniform with the gas mercury anomaly.The measurement method of gas mercury in soil is suitable to find mesothermal epithermal type gold deposit and also suitable to find weathering residual gold deposit.