贵州锦屏地区金矿地球化学特征与成矿物源分析  

Geochemical Characteristics and Minerogenetic Source Analysis of Gold Deposits in Jinping Area,Guizhou Province

作　　者：牟军 覃永军 王安华[1] 罗香建 强希润 MOU Jun;QIN Yong-jun;WANG An-hua;LUO Xiang-jian;QIANG Xi-run(Guizhou Geological Survey,Guiyang 550081,Guizhou,China,Guizhou Research of Geologyand Geophysical prospecting devecoped and Applied Engineering Technology,Guiyang 550081,Guizhou,China,Cademician Workstation,Guizhou Geological Survey,Guiyang 550081,Guizhou,China;Engineering Technology Innovation Center of Mineral Resources Explorations in Bedrock Zones,Ministry of Natural Resources,Guiyang,550081,Guizhou,China;Guizhou Bureau of Geology and Mineral Explora Tion and Development,Guiyang 550004,Guizhou,China)

机构地区：[1]贵州省地质调查院、贵州省地质物探开发应用工程技术研究中心、贵州省地质调查院院士工作站,贵州贵阳550081 [2]自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳550081 [3]贵州省地质矿产勘查开发局,贵州贵阳550003

出　　处：《贵州地质》2020年第1期31-39,73,共10页Guizhou Geology

基　　金：中国地质调查局“贵州1∶5万锦屏、远口、平略、同古4幅区域地质矿产调查”项目,项目编码1212011220404;贵州省科技计划项目:贵州省地质调查院院士工作站(编号:黔科合平台人才[2018]5626)。

摘　　要：对贵州锦屏石英脉型金矿赋矿地层岩石地球化学分析结果表明,该区金矿赋矿层位新元古代下江群再瓦组—隆里组地层中Au元素含量一般低于上地壳背景值,并随地层由老到新其含量大致具有逐渐减少的特点,但Au及其共伴生元素的富集对地层、岩性并无明显的选择性。金矿石中黄铁矿及毒砂硫同位素分析结果显示:δ^34 S介于-0.79‰~5.93‰之间,大部分与上地幔基性—超基性岩δ^34 S值相近,少量与中酸性岩相近,表明成矿物质主要来源于上地幔。The results of petrochemistry analysis of the gold bearing strata of Jinping quartz vein type gold deposit in Guizhou Province show that the gold bearing strata in this area are generally lower than the background value of the upper crust in the strata of Zaiwa Longli formation of the Neoproterozoic Xiajiang group,and the content of Au in the strata decreases gradually from old to new,but the enrichment of Au and its associated elements has no obvious choice for the strata and lithology。The results of sulfur isotopic analysis of pyrite and arsenopyrite in gold ore show that δ^34 S is between-0.79‰ and 5.93‰.Most of them are close to the δ^34 S value of the basic ultrabasic rocks in the upper mantle,and a few are close to the intermediate acid rocks,indicating that the ore-forming materials are mainly from the upper mantle.

关 键 词：金矿 地球化学 成矿物源 贵州 锦屏 

分 类 号：P618.31[天文地球—矿床学] P595[天文地球—地质学]