| 谭洪旗.四川乌依铅矿床成矿物质来源：硫、铅同位素和方铅矿稀土元素地球化学制约[J].地质与勘探,2017,53(6):1051-1060 |
| 四川乌依铅矿床成矿物质来源：硫、铅同位素和方铅矿稀土元素地球化学制约 |
| Ore-forming material source of the Wuyi lead deposit in Sichuan Province: Constraints from geochemistry of sulfur, lead isotope and galena rare earth elements |
| 投稿时间：2016-07-30 修订日期：2017-05-04 |
| DOI： |
| 中文关键词: 硫同位素 铅同位素 铅矿床 乌依 布拖 |
| 英文关键词: sulfur isotope, lead isotope, lead deposit, Wuyi, Butuo |
| 基金项目:中国地质调查局地质调查项目（编号：1212010000150002）和国家自然科学基金项目（编号：
41603034）资助 |
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| 中文摘要: |
| 乌依铅矿床是川滇黔相邻区赋存在奥陶系大箐组地层中典型矿床之一，其成矿物质来源仍不清楚。本文开展了方铅矿和石膏硫同位素及方铅矿稀土元素地球化学研究，获得方铅矿硫同位素δ34S平均值为-4.04‰（n=31），石膏δ34S平均值为29‰（n=15）。方铅矿稀土元素地球化学表明，轻稀土富集，重稀土明显亏损，稀土配分模式曲线大致向右倾，Eu正异常和Ce负异常。结合前人的硫、铅同位素数据，认为乌依铅矿床硫来源于细菌还原地层中硫酸盐所产生的硫，矿石铅来自上地壳，成矿物质来源为奥陶系大箐组，与峨眉山玄武岩无关。 |
| 英文摘要: |
| The Wuyi lead deposit is one of typical Mississippi Valley Type deposits occurred in the Ordovician Daqing Formation in the Sichuan-Yunnan-Guizhou neighboring region. To address the question about ore-forming material sources for this deposit，this work conducted a geochemical study on galena and gypsum sulfur isotopes and rare earth elements of galena. The results show that the average of galena sulfur isotope （δ34S）is -4.04‰（n=31）and gypsum sulfur isotope （δ34S）is 29‰（n=15）. The rare earth elements of galena exhibit an enrichment of heavy rare earth and a deficit of light one，and distribution pattern curves of rare earth are approximately of right deviation with Eu positive anomalies and Ce negative anomalies. In combination with previous sulfur and lead isotope data from this deposit，this study suggests that the sulfur of the Wuyi lead deposit derived from reduction sulfate of stratum，and the ore-forming material source of the lead is not the E’meishan basalt，but the Ordovician Daqing Formation. |
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