湖南醴陵王家湾金矿床地质特征及成矿规律  

Geological characteristics and ore-forming regularitiesof Wangjiawan Gold Deposit in Liling,Hunan

作　　者：高磊 申燕元 Gao Lei;Shen Yanyuan(Urban Geological Survey and Monitoring Institute of Hunan Province;Yiyang City Geological Disaster Control Center)

机构地区：[1]湖南省城市地质调查监测所 [2]益阳市地质灾害防治中心

出　　处：《黄金》2024年第5期80-87,共8页Gold

基　　金：湖南省矿业权价款项目(201303033)。

摘　　要：王家湾金矿床位于扬子陆块江南造山带东南缘醴浏隆起带南源冲复式褶皱北段,成矿区带划分属于钦杭成矿带湖南段的湘东北亚段,处于浏阳—板杉铺金铜铅锌找矿远景区南段。矿体主要赋存于冷家溪群地层中,劈理化带是矿区内的导矿容矿构造,且已发现矿体大多受北西向劈理化带控制。矿石自然类型主要为原生矿石,工业类型为破碎蚀变岩型夹石英脉型。该矿床热液成矿作用可分为4个阶段,以石英-黄铁矿-毒砂-金阶段、石英-碳酸盐-多金属硫化物-银金矿阶段为主成矿阶段。硅化、黄铁矿化和毒砂矿化与金矿化关系密切。王家湾金矿床是以变质热液为主的中低温热液脉状金矿床。Wangjiawan Gold Deposit is located in the southern part of the Jiangnan orogenic belt of the Yangtze continental block,on the southeast margin of the Li-Liu uplift belt,in the north segment of the Nanyuanchong complex fold,which is in the northeast Hunan sub-segment of the Hunan segment of the Qinhang metallogenic belt.It is situ-ated in the southern part of the Liuyang-Banshanpu exploration target area for gold,copper,lead,and zinc minerali-zation.The ore bodies mainly occur in the Lengjiaxi Group strata,with cleaved zones serving as ore-conducting and ore-controlling structures in the mining area,most of which are controlled by NW-trending cleaved zones.The ore types are predominantly primary ores,with an industrial type characterized by fractured altered rock with quartz veinlets.The hydrothermal mineralization of the deposit can be divided into 4 stages,with the quartz-pyrite-arsenopyrite-gold stage and the quartz-carbonate-polymetallic sulfide-silver gold stage being the main mineralization stages.Silicification,pyritization,and arsenopyritization are closely related to gold mineralization.Wangjiawan Gold Deposit is a mesothermal vein-type gold deposit dominated by metamorphic hydrothermal fluids.

关 键 词：王家湾金矿床 地质特征 劈理化带 找矿标志 矿床成因 成矿阶段 

分 类 号：TD11[矿业工程—矿山地质测量] P618.51[天文地球—矿床学]