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| 云南保山西邑铅锌矿床硫铅同位素地球化学特征研究 | |
| 引用本文： | 聂飞,董国臣,莫宣学,赵志丹,王鹏,崔子良,范文玉,刘书生.云南保山西邑铅锌矿床硫铅同位素地球化学特征研究[J].岩石学报,2015,31(5):1327-1334. |
| 作者姓名： | 聂飞 董国臣 莫宣学 赵志丹 王鹏 崔子良 范文玉 刘书生 |
| 作者单位： | 1. 中国地质大学地质过程与矿产资源国家重点实验室,地球科学与资源学院,北京100083;成都地质矿产研究所,成都610081 2. 中国地质大学地质过程与矿产资源国家重点实验室,地球科学与资源学院,北京100083 3. 云南省地矿局地质矿产勘查院,昆明,650051 4. 成都地质矿产研究所,成都,610081 |
| 基金项目： | 本文受国家重点基础研究发展规划项目(2015CB452604、2009CB421002)、长江学者和创新团队发展计划(IRT1083)、111计划项目(B07011)和中国地质调查局综合研究项目(1212010610104)联合资助. |
| 摘 要： | 西邑铅锌矿位于保山地块中北部,矿体定位受下石炭统香山组地层和矿区断裂控制,具有层控特征。硫同位素研究表明,西邑铅锌矿床中硫化物的δ34S值的区间为-2.4‰~+2.3‰,它们与地层中的重晶石的δ34S的值相差约15‰。分析表明,西邑铅锌矿床的硫化物的硫源主要来自地层中的重晶石,它们通过有机质的热分解反应还原为沉淀硫化物所必需的低价硫。矿石铅的铅同位素为206Pb/204Pb=18.547~19.044,207Pb/204Pb=15.608~15.661,208Pb/204Pb=38.541~38.880,显示铀铅富集、钍铅微弱亏损;矿石铅μ值介于于9.46~9.53之间,ω值的范围为35.48~36.79,显示铅源的物质成熟度高,具有上地壳或沉积物的特点。无论是矿床地质特征、还是同位素地球化学特征,均指示夹杂沉积硫酸盐的碳酸盐(含生物碎屑)沉积建造是最为理想的物源,矿床类型为沉积-热液型。 |
| 关 键 词： | 西邑铅锌矿床 硫同位素 铅同位素 成矿物质来源 保山地块 |
| 收稿时间： | 2014/10/8 0:00:00 |
| 修稿时间： | 2015/3/11 0:00:00 |
The characteristics of sulfur and lead isotopic compositions of the Xiyi Pb-Zn deposit in Baoshan Block, western Yunnan |
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| NIE Fei,DONG GuoChen,MO XuanXue,ZHAO ZhiDan,WANG Peng,CUI ZiLiang,FAN WenYu and LIU ShuSheng.The characteristics of sulfur and lead isotopic compositions of the Xiyi Pb-Zn deposit in Baoshan Block, western Yunnan[J].Acta Petrologica Sinica,2015,31(5):1327-1334. | |
| Authors: | NIE Fei DONG GuoChen MO XuanXue ZHAO ZhiDan WANG Peng CUI ZiLiang FAN WenYu and LIU ShuSheng |
| Institution: | State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China;Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China;State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China;State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China;State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China;State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China;Institute of Geology and Minerals Exploration of Yunnan Province, Kunming 650051, China;Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China;Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China |
| Abstract: | |
| Keywords: | Xiyi Pb-Zn deposit Sulfur isotope Lead isotope Ore-forming material sources Baoshan Block |
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