Fluid inclusion and stable isotopic constraints on fluid sources and evolution of the Luojiahe Cu deposit in the southern margin of the North China Craton
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- 作者：Yuhang Jianga ; b ; Hecai Niua ; niuhc@gig.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Yan Zhaoa ; b ; Zhiwei Baoa ; Ningbo Lia ; b ; Qiang Shana
- 关键词：Luojiahe Cu deposit ; North China Craton ; Neoarchean VMS ; CH4-rich metamorphic fluids ; C-H-O isotopes
- 刊名：Ore Geology Reviews
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：80
- 期：Complete
- 页码：214-228
- 全文大小：4667 K
文摘
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The Luojiahe Cu deposit underwent primary VMS stage (I) and metamorphic stage (II).
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The Stage I fluids consist dominantly of evolved seawater and some magmatic fluids.
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The Stage I mineralization results from fluid mixing of evolved and surface seawater.
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The reaction of H2O-graphite results in the generation of CH4 and Cu precipitation at Stage II.
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Graphite was derived from sedimentary organic matter in seafloor hydrothermal vent system.
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