成都理工大学学报（自然科学版）2013，Vol.40Issue(2)：130-138,9.DOI:10.3969/j.issn.1671-9727.2013.02.04
云南会泽铅锌矿床硫同位素问题探讨
Discussion on sulfur isotope of Huize Pb-Zn deposit in Yunnan, China
摘要
Abstract
By using the geochemical theory the authors of this paper analyzes the related recognition of the sulfur isotope of the Huize Pb-Zn deposit in Yunnan, determine the composition of the sulfur isotope and discuss the sulphur origin and mineralization mechanism of this deposit. After that, the authors indicate that the selected samples must be the main sulphides of this deposit and the distribution of samples must occupy the whole ore deposit when we determine the isotopic compositions of sulfur. The characteristics of sulphur isotope of the Huize Pb-Zn deposit are as follows. δ34 S of galena is 4. 8‰ —14. 5‰ and the sample limit error is 9. 7‰. δ34 S of sphalerite is 6. 9‰ —16. 0‰ and the sample limit error is 9.l‰. (^4S of the pyrite in the lower part of the sulphide ore belt is 12. l‰~17. 4‰, the sample limit error is 5. 3%, the total 34S is 4. 8‰~17. 4‰ and the sample limit error is 12. 6‰. The ore-forming fluid flows downward so that the early sulfide in the upper part of the sulphide ore belt is rich in light sulfur, the δ34 S of the sulfide of the late crystals increases with depth. The source of sulfur of this deposit is from seawater sulfate between the host strata. The metallogenic mechanism is as follows. After intruding upon the host strata, the ore-forming fluid with high temperature, depleted sulfur and rich metal (including Fe2+ ) from the deep earth's crust flows down along the host strata and meets the seawater sulfate and reduces the seawater sulfate constantly. Then, the mineralization occurs continuously and results in a super giant Pb-Zn deposit at last.关键词
会泽/铅锌矿床/硫同位素/硫源/成矿机理Key words
Huize/Pb-Zn deposit/sulfur isotope/source of sulfur/metallogenic mechanism分类
天文与地球科学引用本文复制引用
钟康惠,廖文,宋梦莹,张勇强..云南会泽铅锌矿床硫同位素问题探讨[J].成都理工大学学报（自然科学版）,2013,40(2):130-138,9.基金项目
全国危机矿山接替资源找矿专项(20089943) （20089943）
国家重点基础研究计划项目(2011CB403100) （2011CB403100）
