摘要
内蒙古西拉沐伦钼矿带羊场钼铜多金属矿床位于中亚-蒙古巨型造山带东段。矿体主要产于燕山晚期中粗粒黑云母二长花岗岩体中,矿体与岩体关系密切。矿石类型包括石英脉型和角砾岩型两类,矿石中金属矿物主要有辉钼矿、黄铜矿、黄铁矿、方铅矿、闪锌矿。14件金属硫化物硫同位素δ34S值变化范围集中于-1.664‰~1.293‰,平均0.516‰,极差较小,具岩浆硫特征。相对单钼矿床,羊场钼铜矿床硫化物组成更为丰富,硫同位素更接近于0‰,主要受深源岩浆制约。
The Yangchang Mo-Cu polymetallic deposit of the Xilamulun molybdenum metallogenic belt is located in the east part of the Central Asian-Mongolian belt of Inner Mongolia. Its major ore bodies are associated spatially with the Late Yanshanian medium-coarse biotite monzogranite. Molybdenite,chalcopyrite,pyrite,galena and sphalerite are the main metallic minerals,which occur naturally in both quartz vein type and breccia type ores. The δ^（34）S values of 14 sulfides from the main metallic minerals are concentrated in a narrow range near 0‰,from -1. 664‰ to 1. 293‰,with an average value of 0. 516‰,and the δ^（34）S values are typical of magmatic sulfur,indicating that the mineralization at the Yangchang deposit was magmatic in origin.Relative to molybdenum deposit,the Yangchang Mo-Cu polymetallic deposit have such a wide variety of metallic minerals and the δ^（34）S values are concentrated in a narrow range near 0‰,indicative of a primitive mantle source of the Yangchang deposit.
作者
张作伦
周起忠
刘建明
曾庆栋
ZHANG Zuo-lun;ZHOU Qi-zhong;LIU Jian-ming;ZENG Qing-dong(China Non - Metallic Minerals Industry Association, Beijing 100831;Key Laboratory for the Land and Resources Strategic Studies, Ministry of Land and Resources, Beijing 100812;Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029)
出处
《地质与勘探》
CAS
CSCD
北大核心
2018年第3期544-551,共8页
Geology and Exploration
基金
国土资源部国土资源战略研究重点实验室开放课题:全国矿产资源勘查与开发利用监测监管信息化建设项目(编号:DD20160357)资助
关键词
西拉沐伦钼矿带
钼铜多金属矿
硫同位素
羊场钼铜矿床
内蒙古
Xilamulun molybdenum metallogenic belt
Mo- Cu polymetallic deposit
sulfur isotope
Yangchang Mo -Cu deposit
Inner Mongolia
