内蒙古达茂旗东毛忽洞金矿成矿特征及找矿方向

内蒙古达茂旗东毛忽洞金矿区内圈出工业矿体4条,产于燕山晚期的流纹斑岩、花岗斑岩内,受东西向东毛忽洞断裂控制。围岩蚀变为硅化、绢云母化、高岭土化、绿泥石化、碳酸盐化等;金属矿化为黄铁矿化、黄铜矿化、褐铁矿化、孔雀石化、赤铁矿化等。该蚀变岩型金矿床在东毛忽洞断裂与南北向的次级断裂复合叠加部位,金矿化明显增强,富集成矿。结合东毛忽洞金矿成矿特征,对于本区的金矿的找矿方向进行了探讨。

Mineralization characteristics and prospecting direction of Dongmaohudong gold deposit in Damao county,Inner Mongolia

Four industrial orebodies have been outlined in Dongmaohudong,Inner Mongolia.The ore bodies occur in the Late Yanshanian rhyolite porphyry and granite porphyry and controlled by EW direction Dongmaohudong fault structures.Wall rock alteration includes silicification,sericitization,kaolintization,epidotization and carbonatization;metal mineralization includes pyritization,chalcopyritization,limonitization,malachitization and hematitization.The alteratiomal ore bodies gold mineralization is obviously strengthened and enriched at the composite superimposed position of Dongmaohudong fault and secondary SN direction fault.The gold-hunting in the region is discussed on the base of mineralization characteristics in Dongmaohudong gold deposit.