内蒙朱拉扎嘎金矿成矿地质条件及找矿方向初探  

AN INITIAL DISCUSSION ON THE ORE-FORMING CONDITION OF ZHULAZAGA GOLD DEPOSIT AND ITS PROSPECTING DIRECTION

作　　者：孟二根 张有宽 陈旺 

机构地区：[1]内蒙古地质调查院,内蒙呼和浩特010020 [2]内蒙古有色地质勘查局矿勘院,内蒙呼和浩特010010

出　　处：《矿产与地质》2002年第3期168-173,共6页Mineral Resources and Geology

摘　　要：朱拉扎嘎金矿床产于中元古界渣尔泰山群浅变质细碎屑岩中 ,矿层赋存在阿古鲁沟组一段中部层位 ,选择性的产于变质粉砂岩和变质钙质石英粉砂岩等孔隙度较好的岩性层中 ,矿区构造复杂 ,金与岩浆热液关系密切 ,且与 Ag、Cu呈正相关 ,金矿物主要是自然金和银金矿 ,围岩蚀变为中低温热液蚀变类型 ,属层控微细浸染热液交代大型金矿床。Zhulazaga gold deposit occurs in the epimetamorphic fine clastic rocks of Zaertaishan group of middle Proterozoic era. The ore horizon is hosted with the middle layer of Agurugou group. The favorable lithology for the ore is meta-siltstone and meta-calcareous quartz-siltstone with ideal porosity. Tectonic structures in the ore field are very complicated. The gold mineralization is closely related with magmatic hydrothermal showing a positive correlation with Ag and Cu, with natural gold and electrum as main gold minerals. The country rock alteration is low to moderate temperature hydrothermal type. The deposit belongs to stratabound fine disseminated hydrothermal replacement type of gold deposit in large scale.

关 键 词：层控微细浸染热液交代 大型金矿 控矿地质条件 找矿方向 内蒙朱拉扎嘎 

分 类 号：P618.51[天文地球—矿床学]