内蒙古扎鲁特旗呼和哈德地区地球化学异常特征及其找矿意义

Geochemical anomalous characteristics of prospecting significance of Huhehade area,Zhalute Banner,Inner Mongolia

内蒙古扎鲁特旗呼和哈德地区水系沉积物测量异常,是一个多元素组合复杂异常,面积大,强度高,各单元素异常均具有较好的浓集中心。尤其Cu、Ag、Pb、Zn、Sn、Bi等元素呈现高度富集。该水系异常基本覆盖了一花岗斑岩体,而且岩体的分布形态与水系异常基本吻合。经对该异常踏勘,发现较强的硅化及孔雀石化、蓝铜矿化、绿泥—绿帘石化及褐铁矿化。经土壤剖面测量也发现较好Cu、Ag、Au、Zn、Sn土壤异常,具重现性,与水系异常浓集中心相吻合。经工程揭露,在岩体与围岩接触带上发现了铜、银、钼矿化。经测试,部分样品已达到或超过工业品位。该处成矿条件好,是铜、银、钼等多金属矿产成矿有利地段。为寻找以铜为主多金属矿产提供了明确靶区。

There was a synthetic multielement anomaly by stream sediment survey in Huhehade area of Zhalute Banner,Inner Mongolia.It was characterized by large area,strong density,enriched multielements.And there were good concentration center for every element anomaly,especially those of Cu,Ag,Pb,Zn,Sn,Bi with the highest enrichment.The granite porphyry body has been covered by anomaly of stream sediment;the anomaly outline by stream sediment survey and the shape of granite porphyry body are basic match.There was a soil anomaly with Cu,Ag,Au,Zn,Sn elements by soil profile survey,which had reproducibility matched well with concentration center of anomaly by stream sediment survey.It was discovered that there were some Cu,Ag,Mo mineralizations in the contact between the rock body and wall rocks according to exploration engineering works.Grade of some samples reached or exceeded cut-off grade,Forming conditions are good in the study area,being Cu,Ag,Mo,and other metal ore mining favorable districts.In order to find the main polymetallic deposits of copper provides a clear target.