Sulphate-reducing bacteria-mediated pyrite formation in the Dachang Tongkeng tin polymetallic deposit, Guangxi, China
Abstract Mediation by sulphate-reducing bacteria (SRB) is responsible for pyrite (FeS2) formation. The origin of the Dachang tin polymetallic ore field is related to the mineralisation of submarine hydrothermal vent sediments. Here, we investigated SRB in these ores via morphological, chemical, and...
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Nature Portfolio
2023-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-38827-x |
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| author | Fuju Jia Xiangtong Lei Yongfeng Yan Yaru Su Hongjun Zhou Honglian Wei Yuan Yuan Chao Zou Xianwen Shi Ceting Yang |
| author_facet | Fuju Jia Xiangtong Lei Yongfeng Yan Yaru Su Hongjun Zhou Honglian Wei Yuan Yuan Chao Zou Xianwen Shi Ceting Yang |
| author_sort | Fuju Jia |
| collection | DOAJ |
| description | Abstract Mediation by sulphate-reducing bacteria (SRB) is responsible for pyrite (FeS2) formation. The origin of the Dachang tin polymetallic ore field is related to the mineralisation of submarine hydrothermal vent sediments. Here, we investigated SRB in these ores via morphological, chemical, and isotopic analyses. Polarised and scanning electron microscopy indicated that trace SRB fossils in the metal sulphide ore were present in the form of tubular, beaded, and coccoidal bodies comprising FeS2 and were enclosed within a pyrrhotite (FeS) matrix in the vicinity of micro-hydrothermal vents. The carbon (C), nitrogen (N), and oxygen (O) contents in the FeS2 synthesised by SRB were high, and a clear biological Raman signal was detected. No such signals were discerned in the peripheral FeS. This co-occurrence of FeS, FeS2, and the remains of bacteria (probably chemoautotrophic bacteria) was interpreted as the coprecipitation process of SRB-mediated FeS2 formation, which has, to the best of our knowledge, not been reported before. Our study also illustrates that combined energy-dispersive X-ray spectroscopy, Raman spectroscopy, and isotopic analysis can be used as a novel methodology to document microbial-mediated processes of mineral deposition in submarine hydrothermal vent ecology on geological time scales. |
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| id | doaj.art-5b282cf4269e4f2ca4f97f97f0c75a6f |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-12T22:17:48Z |
| publishDate | 2023-07-01 |
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| spelling | doaj.art-5b282cf4269e4f2ca4f97f97f0c75a6f2023-07-23T11:12:46ZengNature PortfolioScientific Reports2045-23222023-07-0113111210.1038/s41598-023-38827-xSulphate-reducing bacteria-mediated pyrite formation in the Dachang Tongkeng tin polymetallic deposit, Guangxi, ChinaFuju Jia0Xiangtong Lei1Yongfeng Yan2Yaru Su3Hongjun Zhou4Honglian Wei5Yuan Yuan6Chao Zou7Xianwen Shi8Ceting Yang9Department of Earth Sciences, Kunming University of Science and TechnologyYunnan Key Laboratory for Paleobiology & MEC International Joint Laboratory for Paleobiology and Paleoenvironment, Institute of Paleontology, Yunnan UniversityDepartment of Earth Sciences, Kunming University of Science and TechnologyGuangxi 215 Geological Team Co., Ltd.Guangxi 215 Geological Team Co., Ltd.Guangxi China-Tin Group Tongkeng Co., Ltd.Guangxi 215 Geological Team Co., Ltd.Department of Earth Sciences, Kunming University of Science and TechnologyDepartment of Earth Sciences, Kunming University of Science and TechnologyDepartment of Earth Sciences, Kunming University of Science and TechnologyAbstract Mediation by sulphate-reducing bacteria (SRB) is responsible for pyrite (FeS2) formation. The origin of the Dachang tin polymetallic ore field is related to the mineralisation of submarine hydrothermal vent sediments. Here, we investigated SRB in these ores via morphological, chemical, and isotopic analyses. Polarised and scanning electron microscopy indicated that trace SRB fossils in the metal sulphide ore were present in the form of tubular, beaded, and coccoidal bodies comprising FeS2 and were enclosed within a pyrrhotite (FeS) matrix in the vicinity of micro-hydrothermal vents. The carbon (C), nitrogen (N), and oxygen (O) contents in the FeS2 synthesised by SRB were high, and a clear biological Raman signal was detected. No such signals were discerned in the peripheral FeS. This co-occurrence of FeS, FeS2, and the remains of bacteria (probably chemoautotrophic bacteria) was interpreted as the coprecipitation process of SRB-mediated FeS2 formation, which has, to the best of our knowledge, not been reported before. Our study also illustrates that combined energy-dispersive X-ray spectroscopy, Raman spectroscopy, and isotopic analysis can be used as a novel methodology to document microbial-mediated processes of mineral deposition in submarine hydrothermal vent ecology on geological time scales.https://doi.org/10.1038/s41598-023-38827-x |
| spellingShingle | Fuju Jia Xiangtong Lei Yongfeng Yan Yaru Su Hongjun Zhou Honglian Wei Yuan Yuan Chao Zou Xianwen Shi Ceting Yang Sulphate-reducing bacteria-mediated pyrite formation in the Dachang Tongkeng tin polymetallic deposit, Guangxi, China Scientific Reports |
| title | Sulphate-reducing bacteria-mediated pyrite formation in the Dachang Tongkeng tin polymetallic deposit, Guangxi, China |
| title_full | Sulphate-reducing bacteria-mediated pyrite formation in the Dachang Tongkeng tin polymetallic deposit, Guangxi, China |
| title_fullStr | Sulphate-reducing bacteria-mediated pyrite formation in the Dachang Tongkeng tin polymetallic deposit, Guangxi, China |
| title_full_unstemmed | Sulphate-reducing bacteria-mediated pyrite formation in the Dachang Tongkeng tin polymetallic deposit, Guangxi, China |
| title_short | Sulphate-reducing bacteria-mediated pyrite formation in the Dachang Tongkeng tin polymetallic deposit, Guangxi, China |
| title_sort | sulphate reducing bacteria mediated pyrite formation in the dachang tongkeng tin polymetallic deposit guangxi china |
| url | https://doi.org/10.1038/s41598-023-38827-x |
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