高校地质学报Issue(3)：28-37,10.
四川拉拉铁氧化物铜金矿床硫同位素地球化学
Sulfur Isotope Geochemistry of the Lala IOCG Deposit in Sichuan Province
摘要
Abstract
The source of sulfur is vital to understand the ore-forming process and genesis of IOCG deposits. We summarize the data of sulfur isotope from the Lala deposit in Sichuan Province, and discuss sulfur isotope compositions of sulfide and their sources on the basis of geologic and ore microscopic studies. The large variability in sulfur isotope indicates that the ore-forming sulfur was multi-sourced. Theδ34S value of pyrite ranges from-1.4‰to 4.9‰with a mean value of 1.8‰and theδ34S value of chalcopyrite ranges from-5.9‰to 9‰with a mean value of 1.5‰. Together with sulfide formation analysis and comparison with some type IOCG deposits worldwide, these data demonstrate that sulfur from seawater evaporate is important to precipitation of pyrite and chalcopyrite. But there is no evidence to support that the variation of sulfur isotope composition is reduced during metamorphism in the Lala deposit.关键词
硫同位素/铁氧化物铜金矿/硫源/拉拉铜金矿Key words
sulfur isotope/IOCG deposit/source of sulfur/Lala copper deposit分类
天文与地球科学引用本文复制引用
朱志敏,李庭学,陈良,谭洪旗,刘应冬..四川拉拉铁氧化物铜金矿床硫同位素地球化学[J].高校地质学报,2014,(3):28-37,10.基金项目
国家自然科学基金（41102044）；四川省青年科技基金（2012JQ0026）资助 （）
