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Modeling experimental study on weathering-leaching of Emeishan basalt and its relation with metallogenesis
Fudong Wan; Xiaoqing Zhu; Tao Han; Zengsheng Li
2010
Source PublicationChinese Journal of Geochemistry
Volume29Issue:2Pages:212-216
AbstractThe 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.
KeywordEmeishan Basalt Copper Ore Weathering-leaching Experiment Ore Deposit
Subject Area矿床地球化学
Indexed ByEI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/6712
Collection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
Recommended Citation
GB/T 7714
Fudong Wan,Xiaoqing Zhu,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 Fudong Wan,Xiaoqing Zhu,Tao Han,&Zengsheng Li.(2010).Modeling experimental study on weathering-leaching of Emeishan basalt and its relation with metallogenesis.Chinese Journal of Geochemistry,29(2),212-216.
MLA Fudong Wan,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.
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