Modeling experimental study on weathering-leaching of Emeishan basalt and its relation with metallogenesis

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	Modeling experimental study on weathering-leaching of Emeishan basalt and its relation with metallogenesis
	Xiaoqing Zhu; Zengsheng Li; Tao Han; Fudong Wan
刊名	Chinese Journal of Geochemistry
	2010
卷号	29 期号:2 页码:212-216
关键词	Emeishan Basalt Copper Ore Weathering-leaching Experiment Ore Deposit
英文摘要	The Emeishan basalt has a high Cu background value (170×10⁻⁶ on average), and thus provides a ore-forming material source for copper ores. The collected samples were exposed in basalt lavas of the third segment of the Emeishan basalt eruptive cycle. By using a set of automatically cycling glass apparatuses, weathering-leaching experiments by three kinds of rainwater on the collected samples were carried out in the open system (at normal temperature and normal pressure). The analysis results showed that the most intensive export of Cu occurred under acidic rainwater-induced weathering-leaching conditions, almost 2–3 orders of magnitude the export of Cu by modern air rainwater, and 1–2 orders of magnitude higher than the export of Cu by CO₂ rainwater. In addition, the total amount of Zn, Cu, U, Ni and Sr exported by acidic rainwater are greater than 1%. All this indicates that copper in the Emeishan basalt provided the copper source for Cu mineralization at the contact between the basalt and the Maokou Formation limestone at the bottom.
学科主题	矿床地球化学
语种	英语
公开日期	2017-12-08
内容类型	期刊论文
源URL	[http://ir.gyig.ac.cn:8080/handle/352002/6712]
专题	地球化学研究所_矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Xiaoqing Zhu,Zengsheng Li,Tao Han,et al. Modeling experimental study on weathering-leaching of Emeishan basalt and its relation with metallogenesis[J]. Chinese Journal of Geochemistry,2010,29(2):212-216.
APA	Xiaoqing Zhu,Zengsheng Li,Tao Han,&Fudong Wan.(2010).Modeling experimental study on weathering-leaching of Emeishan basalt and its relation with metallogenesis.Chinese Journal of Geochemistry,29(2),212-216.
MLA	Xiaoqing Zhu,et al."Modeling experimental study on weathering-leaching of Emeishan basalt and its relation with metallogenesis".Chinese Journal of Geochemistry 29.2(2010):212-216.