Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Zhang, Long1,2; Wang, Qiang1,2,3 ; Xian, Haiyang2,4; Zhou, Jin-Sheng1,2; Ding, Xing1,2; Li, Wan-Cai5,6
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| Carbon mineralization and abiotic methane synthesis within fluid inclusions in mafic minerals from postcollisional pyroxenite | |
| Source Publication | GEOCHIMICA ET COSMOCHIMICA ACTA
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| ISSN | 0016-7037 |
| 2023-09-01 | |
| Volume | 356Pages:38-50 |
| DOI | 10.1016/j.gca.2023.07.007 |
| Language | 英语 |
| WOS Research Area | Geochemistry & Geophysics |
| Abstract | Carbon mineralization in mafic-ultramafic rocks is not only a natural process that can form significant carbon sinks in the lithosphere, but also a promising procedure for artificial CO2 storage. In this study, we report unique records of in situ carbon mineralization within fluid inclusions in postcollisional pyroxenite from the Dabie orogen, central China. Olivine, orthopyroxene, clinopyroxene, and amphibole in the pyroxenite trapped CO2-rich magmatic fluids as fluid inclusions, which were subjected to internal carbon mineralization due to interaction between trapped fluids and host minerals during cooling of the pyroxenite. In fluid inclusions, carbonation of olivine produced magnesite, talc, magnetite, and CH4; carbonation of orthopyroxene generated magnesite, talc, cristobalite, and CH4; carbonation of clinopyroxene formed calcite, dolomite, actinolite, talc, cristobalite/quartz, and CH4; carbonation of amphibole created calcite, dolomite, chlorite, cristobalite/quartz, talc, mica, a TiO2 phase, a NaAlSi3O8 phase, and CH4. Carbonation reactions within the fluid inclusions have general implications for reaction pathways of carbon mineralization in mafic-ultramafic rocks. Moreover, it is shown that iron oxidation is thermodynamically favored during high-extents carbonation of diverse mafic minerals in the presence of CO2-rich fluids, facilitating abiotic synthesis of CH4 that is a crucial gas in both natural carbon cycling and engineered carbon storage. |
| Keyword | Carbon mineralization Methane Fluid inclusions Mafic minerals Pyroxenite Dabie orogen |
| WOS ID | WOS:001047037800001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74650 |
| Collection | 同位素地球化学国家重点实验室 |
| Corresponding Author | Zhang, Long |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 5.Univ Sci & Technol China, Sch Earth & Space Sci, CAS, Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China 6.Univ Sci & Technol China, CAS, Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Long,Wang, Qiang,Xian, Haiyang,et al. Carbon mineralization and abiotic methane synthesis within fluid inclusions in mafic minerals from postcollisional pyroxenite[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2023,356:38-50. |
| APA | Zhang, Long,Wang, Qiang,Xian, Haiyang,Zhou, Jin-Sheng,Ding, Xing,&Li, Wan-Cai.(2023).Carbon mineralization and abiotic methane synthesis within fluid inclusions in mafic minerals from postcollisional pyroxenite.GEOCHIMICA ET COSMOCHIMICA ACTA,356,38-50. |
| MLA | Zhang, Long,et al."Carbon mineralization and abiotic methane synthesis within fluid inclusions in mafic minerals from postcollisional pyroxenite".GEOCHIMICA ET COSMOCHIMICA ACTA 356(2023):38-50. |
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