松江河金矿区地球化异常显著。1∶5万水系沉积物测量，发育有Au、Zn、Bi、Pb等元素异常，其中Au元素异常面积16 km2，峰值24×10－9，平均值5．5×10－9，衬度10，NAP值37；1∶1万土壤测量，异常元素有Au、Ag、Cu、Sb、Pb、As等，其中Au元素异常面积达0．2178 km2，浓度分带明显，峰值253．4×10－9，平均值为29．7×10－9，异常下限3．66×10－9，平均衬度8．11，最大衬度69．23，NAP值1．767；原生晕测量，元素组合分带明显，前缘晕指示元素有Pb、As、Hg，中间成矿元素为Au、Ag、Cu，尾晕元素有W等。矿区地球化学异常特征也是重要的地球化学找矿标志。
There is significant geochemical anomaly in Songjianghe gold district.1∶50 000 stream sediment survey indicates Au,Zn,Bi,Pb anomalies and so on.And among them Au anomaly area occupies 16 km2 ,peak value is 24 × 10 -9 ,average value is 5.5 ×10 -9 ,contrast is 10,NAP value is 37;1∶10 000 soil survey shows Au,Ag,Cu,Sb,Pb,As anomalies and so on.And among them Au anomaly area occupies 0.2178 km2 ,concentration zonation is obvious,peak value is 253.4 ×10 -9 ,average value is 29.7 ×10 -9 ,bottom value is 3.66 ×10 -9 ,average contrast is 8.11,maximum contrast is 69.23,NAP is 1.767;primary halo survey suggests an obvious zonation of element association.Indication elements in front halo include Pb,As,Hg,middle mineralization elements include Au,Ag,Cu,and rear halo includes W and so on.The geochemical anomaly characteristics are also important geochemical prospecting indicators.
参考文献
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