内蒙古锡林浩特—苏尼特左旗地区金成矿条件及找矿远景分析

Gold Mineralization and Prospecting Analysis in Xilinhaote and Sunitezuoqi Areas,Inner Mongolia

在论述锡林浩特—苏尼特左旗地区找矿环境及成矿地质背景的基础上,系统研究了地层、构造作用和岩浆活动与金矿的有机联系,对该地区金成矿地质条件进行了初步分析,认为区内多数金矿床(点)受构造控制明显,成矿主要与晚古生代中酸性侵入岩、次火山岩及韧性剪切带关系密切,矿床类型以石英脉型、蚀变岩型及中低温热液型为主。最后,结合区域物化探异常特征,建立了区域找矿综合模型,划分出4个成矿远景区,指出苏尼特左旗以东至锡林浩特广大地区具备较大的金矿找矿前景。

Based on the discussion of Xilinhaote and Sunitezuoqi prospecting environment and mineralization geo- logical background, the organic links of stratigraphic, tectonic, magmatic activities and gold mineraliztions has been system studied.After a preliminary analysis of the areas metallogenic geological conditions,we point out that the majority of deposits （points） significantly controlled by structure, mineralization is mainly related to the late Paleo- zoic acidic intrusive rocks,sub-volcanic rocks and ductile shear zone,and the main deposit types are quartz veins, altered rock and low-temperature epithermal.Last, with comprehensive study of regional geophysical and geochemi cal anomalies characteristic, four prospecting areas are divided.There are large gold ore prospects from the east of Xilinhaote to Sunitezuoqi areas.