黔东南金井金矿床地质特征及金的赋存状态研究  

Geological Characteristics and Occurrence Status of Gold in Jinjing Gold Deposit in Southeastern Guizhou

作　　者：陈学峥 周力 江满容[2] 刘安璐 刘文浩[2] Chen Xuezheng;Zhou Li;Jiang Manrong;Liu Anlu;Liu Wenhao(Institute Geological Survey of Jiangsu Province,Nanjing,Jiangsu 210018;School of Earth,China University of Geosciences,Wuhan,Hubei 430074;Yifu Museum,China University of Geosciences,Wuhan,Hubei 430074)

机构地区：[1]江苏省地质调查研究院,江苏南京210018 [2]中国地质大学(武汉)资源学院,湖北武汉430074 [3]中国地质大学(武汉)逸夫博物馆,湖北武汉430074

出　　处：《资源环境与工程》2024年第1期9-15,共7页Resources Environment & Engineering

摘　　要：金井金矿床是黔东南下达—金井金矿田的一个代表性金矿床。在野外地质观察基础上,介绍金井金矿床矿石特征,并运用显微观察和电子探针分析,研究该矿床金的赋存状态。金井金矿床属于贫硫化物石英脉型金矿,矿体以含金石英脉形式产出于金井背斜两翼层间滑动带中,主要矿石矿物为(含银)自然金,其热液成矿期可以划分为石英—自然金阶段、石英—毒砂—自然金阶段和石英—多金属硫化物—自然金阶段3个成矿阶段。金可以划分为可见金和不可见金,可见金主要为自然金,成色高,以裂隙金、包裹金、粒间金的形式赋存于石英、黄铁矿、毒砂、黄铜矿、方铅矿和闪锌矿中;不可见金则以纳米金和固溶体金两种形式赋存于黄铁矿等硫化物中。研究成果可为深入研究矿床成因和提高矿石选冶技术提供依据。The Jinjing gold deposit is a representative gold deposit in the Xiada-Jinjing gold field in southeastern Guizhou Province.Based on the field geological observation,this paper presents the ore characteristics of Jinjing gold deposit in detail.Besides,the anthors systematically studied the occurrence of gold in the deposit.The Jinjing gold deposit belongs to the poor sulfide quartz vein type gold deposit,and the ore body occurs in the form of gold bearing quartz veins in the interlayer sliding zone of the two wings of the Jinjing anticline.The main ore mineral is(containing silver)natural gold.The hydrothermal metallogenic stage of the Jinjing gold deposit is divided into quartz-gold stage(S1),quartz-arsenopyrit-gold stage(S2),and quartz-polymetallic sulfide-gold stage(S3).Gold in the deposit can be divided into“visible gold”and“invisible gold”.The“visible gold”is mainly native gold with high fineness,which exists in quartz,pyrite,arsenopyrite,copper pyrite,galena and sphalerite in the form of fissure gold,wrapped gold and intergranular gold.The“invisible gold”occurs in pyrite and other sulfides in the form of nano gold and solid solution gold.The research results provide important basis for in-depth research on the genesis of ore deposits and the improvement of ore dressing and smelting technology.

关 键 词：金 赋存状态 矿石特征 金井金矿床 黔东南 

分 类 号：P618.51[天文地球—矿床学]