湖南省汝城高凹背石英细脉带型钨钼矿床地质特征及其找矿意义  

Geological characteristics and prospecting significance of Gao aobei quartz-veinlets-zone type W-Mo deposit in Rucheng County,Hunan Province

作　　者：刘阳生 胡斯琪 肖林 詹峻一 李立兴[2] 严富贵 田军委 易元顺 LIU Yangsheng;HU Siqi;XIAO Lin;ZHAN Junyi;LI Lixing;YAN Fugui;TIAN Junwei;YI Yuanshun(Mineral Resources Investigation Institute of Hunan Province,Hunan Changsha 410083,China;Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China)

机构地区：[1]湖南省矿产资源调查所,湖南长沙410083 [2]中国地质科学院矿产资源研究所,北京100037

出　　处：《中国地质调查》2023年第2期10-18,共9页Geological Survey of China

基　　金：中国地质调查局“湖南桂东—汝城地区钨锡多金属矿远景调查(编号:资[2007]增01-13-02号、资[2009]增19-02、资[2010]矿评01-14-11)”;湖南省国土资源厅“湖南省三九—白云仙地区钨锡铀多金属整装勘查(编号:201003006)”“湖南省汝城县高凹背矿区钨钼矿详查(编号:20150317)”项目联合资助。

摘　　要：在前人研究成果和详查成果的基础上,重点研究了湖南省汝城高凹背钨钼矿床的含矿石英脉特征,着重分析了多期次岩浆活动和多次成矿作用及意义,总结了金属元素水平分带及钨钼垂直分带特征。高凹背钨钼矿矿床类型为石英细脉带型钨钼矿床,矿床形成于燕山早期,主要以脉幅为0.5~5 cm的含钨钼石英微脉—细脉的形式充填于印支期黑云母二长花岗岩上部,上为寒武系香楠组角岩覆盖,成矿系统保存完整;石英脉各向走向均有分布,优势产状走向为NWW向,倾向北北东;主工业矿体矿化连续,具“低品位大吨位”特征;矿石的主要有用矿物为黑钨矿、辉钼矿,并具上钨钼、下钨的垂直分带现象。高凹背大型石英细脉带型钨钼矿床的发现对今后在湘东南地区寻找类似矿床具有重要的借鉴意义。Based on previous survey and detailed study,the authors focused on the characteristics of the ore-bearing quartz veins and investigated the multistage magmatic activities and mineralization.Besides,the horizontal zoning of metal element and vertical zoning of W-Mo deposit were also summarized.The Gao aobei deposit belongs to a veinlets-zone type W-Mo deposit that formed at Early Yanshanian period.The W-Mo deposit is characterized by 0.5-5 cm W-Mo-bearing veinlets or micro-veinlets,filling into the upper parts of Indosinian biotite monzogranite,and is covered by the hornfels of Xiangnan Formation in Cambrian,with complete metallogenic system.The quartz veins are distributed in all directions,and the optimum attitude is NWW strike and NNE dip.The main W-Mo orebody is continuous,with a feature of low grade and large tonnage.The main ore minerals are wolframite and molybdenite,with a vertical zoning developed as upper tungsten and lower molybdenum.The discovery of this large-scale veinlets-zone type W-Mo deposit is of great significance to prospecting the same deposits in future in Hunan Province.

关 键 词：石英细脉带 钨钼矿床 汝城县 高凹背 

分 类 号：P618.4[天文地球—矿床学]