湘西铅锌矿地质特征与成矿作用  

Geochemical characteristics and ore-forming of Pb-Zn deposit, Western Hunan

作　　者：徐耀鉴[1] 杨柳[1] 尹萍[1] 郑平[1] JASMI Hafiz Abdul Aziz XU Yao-jian;YANG Liu;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,湖南长沙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72-74,共3页World Nonferrous Metals

基　　金：湖南省自然科学基金(2018JJ5012)资助。

摘　　要：董家河铅锌矿位于湘西沅陵县,是湘西铅锌矿带内唯一产于震旦系内的大型矿山。该矿床赋矿地层震旦系陡山沱组,围岩为白云岩,矿体呈透镜状、层状及似层状产出,金属矿物为黄体矿、闪锌矿及少量铅锌矿,脉石矿物为白云石、石英、方解石及少量绢云母。矿石为晶粒结构及交代残余结构,致密块状、浸染状、条纹状、网脉状及斑杂状构造。矿床地质特征显示铅锌成矿受地层、岩相及构造联合控制,含矿中低温热液在区域构造演化过程中运移至合适围岩及构造环境下卸载成矿。The Dongjiahe Pb-Zn deposit,located in Yuanling County,Western Hunan,is the only large deposit that occurred in the Sinian System in the Western Hunan Pb-Zn belt.The ore-bearing strata of the deposit are Sinian Doushantuo Formation,the surrounding rock is dolomite and the ore bodies are lenticular,stratiform and stratoid.Metallic minerals are chalcopyrite,sphalerite and a small amount of lead-zinc ore.Gangue minerals are dolomite,quartz,calcite and minor sericite.The ore structure is grain structure and metasomatic relict texture,dense massive,disseminated,striped,stockwork and spot miscellaneous structure.The geological characteristics of the deposit show that the Pb-Zn mineralization is commonly controlled by strata,lithofacies and tectonics.The ore-bearing medium and low-temperature hydrothermal fluid migrated to the appropriate surrounding rock and unloaded mineralization under a tectonic environment during the regional tectonic evolution process.

关 键 词：董家河 铅锌矿 地质特征 成矿作用 

分 类 号：P612.31[天文地球—矿床学]