广西新开古济冲金矿地质特征与成矿原因分析  

Analysis of Geological Characteristics and Minerals Cause of Xinkai Gujichong Gold Mine in Guangxi

作　　者：黄云平 HUANG Yun-ping(The ninth Geological Brigade of Jiangxi Geological Bureau,Ji'an 343000,China)

机构地区：[1]江西省地质局第九地质大队,江西吉安343000

出　　处：《世界有色金属》2021年第24期58-60,共3页World Nonferrous Metals

摘　　要：新开古济冲金矿床位于大瑶山Au-Ag-Cu-Pb-Zn成矿带,矿床赋矿层位为寒武系水口群变质岩系,近南北向和东西向断裂及其次级裂隙为金矿体主要控矿构造,区内加里东至燕山期均有岩浆侵入活动,围岩蚀变强烈,其中硅化、云英岩化、黄铁矿化与构造带呈线状分布,与成矿关系密切,金矿体产于寒武系水口群构造蚀变破碎带内,矿床成因类型属中温热液石英脉型金矿床,矿脉形态不规则,膨大缩小分支复合现象明显,厚度、品味变化较大,成矿过程可分为烟石英-乳白石英-白石英-硫化物-碳酸盐五个成矿阶段。The Xinkai gujichong gold deposit is located in the Dayaoshan Au Ag Cu Pb Zn metallogenic belt.The ore bearing horizon of the deposit is the Cambrian Shuikou group metamorphic rock series.The near north-south and east-west faults and their secondary fractures are the main ore controlling structures of the gold deposit.Magmatic intrusion occurred from Caledonian to Yanshanian,and the wall rock alteration is strong,including silicification,greisenization Pyritization and structural belt are linearly distributed and closely related to mineralization.The gold ore body occurs in the structural alteration fracture zone of Cambrian Shuikou group.The genetic type of the deposit belongs to mesothermal hydrothermal quartz vein type gold deposit.The vein shape is irregular,the expansion and contraction,the branching compound phenomenon is obvious,and the thickness and taste change greatly,The metallogenic process can be divided into five metallogenic stages:smoke quartz milky white quartz white quartz sulfide carbonate.

关 键 词：中温热液石英脉型金矿床 地质特征 成矿原因分析 新开金矿 大瑶山 

分 类 号：P618.51[天文地球—矿床学]