摘要
通过对阿西金矿床地质特征、成矿条件和矿床成因的研究,认为阿西金矿床产于中三叠统扎尕山组第三、四段的碎屑岩和碳酸盐岩中,赋存于闪长岩体的内、外接触带,受NW向断裂带控制。金矿（化）带的形成与闪长岩体有密切关系,产于岩体外接触带围岩构造破碎带中的金矿体是阿西金矿最重要的矿体。矿体形态为脉状、似层状及透镜状,矿体厚度及品位变化不大,矿化相对均匀。金矿化与硅化、碳酸盐化、黄铜矿化、黄铁矿化关系密切。中酸性岩浆活动与断裂构造是矿床形成的先决条件。其矿床成因为岩浆及（期后）热液改造型矿床。
based on study of Axi gold deposit geological features,ore-forming conditions and genesis,it is considered that the gold deposit occur in carbonate rock and fragmental rock of member No.3 and member No.4 Zhaga formation,middle Triassic series,namely： endocontact and exocontact of diorite body,which is controlled by NW strike fracture zone.Gold deposit mineralization belts have close relations with the diorite body,Axi gold ore body occur in the structural fracture zone of diorite body exocontact mainly.Orebody shape are veined,stratoid and phacoidal.Thickness and grade of ore body change little and mineralization is relatively homogeneous.Gold mineralization has relations with silicification,carbonation,chalcopyrite mineralization and pyritization Intermediate-acid magmatic activity and the fracture structure are the precondition of ore deposit formation.Genesis of deposit is magma and（post-igneous） hydrothermal replacement deposit.
出处
《吉林地质》
2013年第1期26-31,共6页
Jilin Geology
关键词
阿西金矿床
地质特征
矿床成因
Axi gold deposit
geological features
genesis of deposit
