地质学报Issue(8)：1539-1548,10.
鄂东南地区鸡笼山矽卡岩金矿床的辉钼矿Re-Os同位素年龄及其构造意义
Re-Os Dating of Molybdenite from the Jilongshan Skarn Au Deposit in Southeast Hubei Province,Middle-Lower Yangtze River Belt and Its Tectonic Significance
摘要
Abstract
Southeast Hubei Province is one of the most important part of the Cu-Au-Fe-Mo metallogenic belt in the middle-lower Yangtze River in China,the Jilongshan Au deposit is a large skarn gold deposit in this area.This paper use Re-Os isotope dating method for the determination of timing of the Jilongshan gold deposit.The molybdenite Re-Os isotopic model age range from 147. 7 ±2. 4 to 151. 6 ±4. 02Ma with an isochron age of 148. 6±1. 5Ma,which is alomost similar to zircon SHRIMP U-Pb age of 151. 6±0. 7Ma of granodiorite porphyry in the Jilongshan Au skarn deposit.These data are alos consistent with skarn Cu-Fe mineralization age in Southeast Hubei.The Jilongshan skarn Au deposits may be formed in lithosphere extension tectonic setting.Sulfur isotope values are -2. 5‰~5. 5‰ with an mean value of 2. 84‰, eflecting that the characteristics ore-forming material originated from magmatic origin.The content of Re in molybdenite is 174. 3 ×10-6~8714 ×10-6 ,with an average value of 476. 2 ×10-6 ,indicating that the sources of ore-forming are deried from a mixture of crust and mantle material.关键词
辉钼矿/Re-Os同位素定年/硫同位素/鸡笼山金矿/鄂东南Key words
molybdenite/Re-Os isotopic dating/sulfur isotope/Jilongshan Au deposits/southeastern Hubei引用本文复制引用
王建,谢桂青,陈风河,朱乔乔,李伟,张志远..鄂东南地区鸡笼山矽卡岩金矿床的辉钼矿Re-Os同位素年龄及其构造意义[J].地质学报,2014,(8):1539-1548,10.基金项目
中央级公益性科研院所基本科研业务费专项资金K0902和国土资源部公益性行业课题（200911007-18和201311136）、科学技术部973课题（2007CB411407）资助。 （）
