甘肃省敦煌市白山金矿地质特征及找矿标志  

Geological Characteristics and Prospecting Indicators of Baishan Gold Deposit in Dunhuang City,Gansu Province

作　　者：杨锋[1] 王俊 YANG Feng;WANG Jun(Zhangye Mineral Exploration Institute of Gansu Nonferrous Metals Geological Exploration Bureau,Zhangye 734000,China)

机构地区：[1]甘肃省有色金属地质勘查局张掖矿产勘查院,甘肃张掖734000

出　　处：《世界有色金属》2023年第7期73-75,共3页World Nonferrous Metals

摘　　要：敦煌市白山金矿位于塔里木板块的东端,北山陆缘活动带古生代柳园-俞井子裂谷带西段,该区主要以钨、金、锑、铁、铜、钒为主的多金属成矿区。区域金矿成矿类型主要为破碎蚀变岩型和含金石英脉型。通过对白山金矿点以往地质勘查工作综合研究和分析,矿区内金矿成矿类型为破碎蚀变岩-含金石英脉型,金矿(化)体主要产于破碎蚀变岩-含金石英脉,金矿(化)体充填于破碎带蚀变岩及围岩节理、裂隙内,矿床为后期岩浆热液多次叠加改造形成,为中低温热液成因。成矿主要受次级断裂构造控制,矿体的规模、形态、产状与断裂构造关系密切,金矿体主要赋存于断裂破碎带中。The Baishan gold deposit in Dunhuang City is located at the eastern end of the Tarim plate and the western section of the Paleozoic Liuyuan Yujingzi rift belt of the Beishan continental margin active belt.This area is a polymetallic metallogenic area dominated by tungsten,gold,antimony,iron,copper and vanadium.The main types of regional gold mineralization are fractured altered rock type and gold bearing quartz vein type.Through comprehensive research and analysis of previous geological exploration work at the Baishan gold deposit,it is found that the mineralization type of the gold deposit in the mining area is the fractured altered rock gold bearing quartz vein type.The gold deposit(mineralized)body mainly occurs in the fractured altered rock gold bearing quartz vein,and the gold deposit(mineralized)body is filled in the fractured zone altered rock and surrounding rock joints and fractures.The deposit is formed by multiple superimposed transformations of later magmatic hydrothermal fluids,and is of medium to low temperature hydrothermal origin.Mineralization is mainly controlled by secondary fault structures,and the scale,morphology,and occurrence of ore bodies are closely related to fault structures.Gold ore bodies mainly occur in fracture zones.

关 键 词：白山金矿 找矿标志 破碎蚀变岩-含金石英脉 敦煌市 

分 类 号：P618.51[天文地球—矿床学]