蒙西铜矿床S、Pb同位素特征及其地质意义  

Characteristics of Sulfur and Lead Isotope Compositions and Their Geological Significance in Mengxi Copper Deposit

作　　者：王双杰 王得权 王建国 李培贵 王瑞美[3] 

机构地区：[1]中煤地质工程总公司,北京100040 [2]中陕核工业集团公司,西安710054 [3]长安大学,西安710054

出　　处：《煤炭技术》2016年第3期110-111,共2页Coal Technology

基　　金：中陕核工业集团公司科技创新项目(61150101)

摘　　要：共采集7件铜矿石样品,挑选与黄铜矿共生的黄铁矿,进行S、Pb同位素分析。在Δγ-Δβ图解中样品点均落在上地壳与地幔混合的俯冲带铅(岩浆作用)区域内,也指示矿石铅为壳幔混合成因。S、Pb同位素的特征,暗示蒙西铜矿的物质来源主要为岩浆热液所带来的深源Cu。Gathered 7 pieces of copper ore samples and choosed the symbiosis with chalcopyrite pyrite for S,Pb isotopes analysis. The sample points are located in the area of the subduetion zone of the upper crust and mantle mixing in Δγ-Δβ figure. Ore lead is crust-mantle mixing origin. The characteristics of S, Pb isotope suggest that the material sources of Mengxi copper mine, mainly caused by magmatic hydrothermal deep source Cu.

关 键 词：S同位素 PB同位素 壳幔混合成因 

分 类 号：P597.3[天文地球—地球化学]