湘西董家河有机流体与铅锌成矿关系  

Organic fluid and mineralization relationship of Dongjiahe Pb-Zn deposit, Western Hunan

作　　者：杨柳[1] 徐怡然 尹萍[1] 郑平[1] JASMI Hafiz Abdul Aziz YANG Liu;XU Yi-ran;YIN Ping;ZHENG Ping;JASMI Hafiz Abdul Aziz(Department of Natural Resources,Hunan Vocational College of Engineering,Changsha 410151,China;Department of Geology,Faculty of Science,University of Malaya,Kuala Lumpur 50603,Malaysia)

机构地区：[1]湖南工程职业技术学院,长沙410151 [2]马来西亚大学理学院地质系,马来西亚吉隆坡50603

出　　处：《世界有色金属》2021年第20期131-133,共3页World Nonferrous Metals

基　　金：湖南省自然科学基金(2018JJ5012)资助。

摘　　要：董家河铅锌矿位于湖南怀化市沅陵县东南部,是湘西地区典型碳酸盐容矿型大型矿山之一。对该矿床多金属硫化物阶段闪锌矿进行了激光拉曼研究,结果显示闪锌矿中存在含烃包裹体及含沥青包裹体,反映有机流体参与了铅锌成矿。综合分析认为湘西地区震旦系陡山沱组作为本区油气储层之一,在区域演化过程中,不仅为铅锌成矿提供了富含有机质的成矿流体,也为金属元素的活化迁移提供了条件。有机质与海相硫酸盐类的热化学还原反应是导致金属元素卸载成矿的重要原因之一。Dongjiahe Pb-Zn deposit,located in the southeast of Yuanling County,Huaihua City,Hunan Province,which is one of the typical carbonate-hosted large mines in western Hunan.The Laser Raman results of sphalerite in polymetallic sulfide stage show that there are hydrocarbon-bearing inclusions and bitumen-bearing inclusions in sphalerite,reflecting that organic fluids participate in Pb-Zn mineralization.General analysis shows that the Sinian Doushantuo Formation in western Hunan,as one of the oil and gas reservoirs in this area,not only provides organic-rich ore-forming fluid for Pb-Zn mineralization but also provides conditions for the activation and migration of metal elements in the process of regional evolution.The thermochemical reduction reaction between organic matter and marine facies sulfates is one of the important reasons for the unloading mineralization of metal elements.

关 键 词：董家河 铅锌矿 有机流体 成矿关系 

分 类 号：P612.31[天文地球—矿床学]