硫同位素地质特征及其在湖南省铜矿床成矿物质来源示踪中的应用  

Sulfur Isotopic Characteristics of Copper Deposits in Hunan Province

作　　者：李振红[1,2] 赵亚辉 周厚祥 LI Zhen-Hong;ZHAO Ya-Hui;ZHOU Hou-Xiang(Hunan University of Science and Technology,Xiangtan 411201;No.311 Brigade of Hunan Nuclear Geology,Changsha 410001;Hunan Planning Institute of Land and Resources,Changsha 410007)

机构地区：[1]湖南科技大学,湖南湘潭411100 [2]湖南省核工业地质局三一一大队,长沙410001 [3]湖南省国土资源规划院,长沙410007

出　　处：《华南地质与矿产》2018年第1期72-77,共6页Geology and Mineral Resources of South China

基　　金：湖南省级财政科研项目<衡阳盆地及其周缘铜铅锌多金属矿床深部地质背景;成矿规律及找矿方向研究>

摘　　要：硫是铜矿床的重要成矿物质,硫同位素特征可用于示踪含硫矿物或流体来源,从而为矿床成因和成矿预测研究提供支持。本文简述了硫同位素特征在地质勘查中的应用进展,并将湖南省以铜为主要矿种的铜矿床分为岩浆热液型和砂页岩型两大类,对矿床的基本地质特征和硫同位素特征进行了分析,总结了硫同位素的分布特征:矽卡岩型铜矿床矿石矿物中硫化物δ34S分布较为集中,峰值通常位于3~5‰之间,热液交代型铜矿床含硫矿物中δ34S的分布范围和峰值与矽卡岩型铜矿床有明显区别;砂岩型铜矿床中δ34S分布范围一般较广,峰值通常为较大的负值。硫同位素特征在湖南省铜矿床成矿作用研究中可以发挥更大的作用。Sulfur is an important ore-forming material of copper desposits, so the characteristics of sulfur isotopes can be used to trace the source of sulfur minerals or fluids, thus providing support for the study of ore genesis and metallogenic prognosis. The development in the application of sulfur isotope characteristics in geological exploration was briefly described in this paper. Copper deposits in Hunan province were divided into magmatic hydrothermal type and sandstone-shale type to discuss the sulfur isotope characteristics. The distribution of δ^（34）S of sulfur minerals in the skarn type copper deposit is relatively concentrated, and the peak value is usually between 3‰ and 5‰. The distribution range and peak of δ^（34）S of sulfur minerals in the hydrothermal metasomatic copper deposit are obviously different from that of the skarn type copper deposit. In the sandstone type copper deposit, the distribution range of δ^（34）S are generally wide and the peak is usually negative. The sulfur isotope characteristics can play a more important role in the study of mineralization of copper deposits in Hunan province.

关 键 词：铜多金属矿床 硫同位素 成矿流体来源 岩浆热液型矿床 砂页岩型矿床 

分 类 号：P597.2[天文地球—地球化学]