Study on the material source and enrichment mechanism of REE-rich phosphorite in Zhijin, Guizhou
Abstract Rare earth element (REE)-rich phosphorite in the Guizhou region mainly exists in the Doushantuo Formation and Gezhongwu Formation in early Cambrian strata, which are some of the important strata containing phosphorite resources in China. The early Cambrian Zhijin phosphorite in Guizhou Prov...
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Nature Portfolio
2024-03-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-57074-2 |
| _version_ | 1827310302564188160 |
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| author | Jingya Wang Zhongkun Qiao |
| author_facet | Jingya Wang Zhongkun Qiao |
| author_sort | Jingya Wang |
| collection | DOAJ |
| description | Abstract Rare earth element (REE)-rich phosphorite in the Guizhou region mainly exists in the Doushantuo Formation and Gezhongwu Formation in early Cambrian strata, which are some of the important strata containing phosphorite resources in China. The early Cambrian Zhijin phosphorite in Guizhou Province, China, has high rare earth element and yttrium (REY) contents of up to 2500 ppm, with heavy REY (HREY) contents accounting for ~ 30% of the total REY contents. However, the specific controlling source and environment of phosphorite (especially the REEs in Zhijin phosphorite) are still unsolved. Through field geological investigations; mineralogical, geochemical, Sr–Nd isotope analyses; and tectonic characteristics, the material source, sedimentary environment and seawater dynamics of REEs in phosphorite are studied. It is considered that the REEs enriched in the Zhijin phosphorite are mainly affected by precipitation from hydrothermal fluid. Moreover, from the late Ediacaran to the early Cambrian, the depositional environment from the bottom to the top of the water tended to be hypoxic, and the activity of hot water fluid tended to be strong. The change in redox conditions is closely related to the rise and fall of sea level. Combined with the tectonic background, these results show that the weakly oxidized environment may be an important factor controlling the enrichment of REEs. The enrichment of REEs may be closely related to volcanic hydrothermal activity, later diagenesis and seawater dynamics. |
| first_indexed | 2024-04-24T19:57:35Z |
| format | Article |
| id | doaj.art-e007699a9c4e47c4a59c7454e5147b75 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T19:57:35Z |
| publishDate | 2024-03-01 |
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| spelling | doaj.art-e007699a9c4e47c4a59c7454e5147b752024-03-24T12:16:43ZengNature PortfolioScientific Reports2045-23222024-03-0114112110.1038/s41598-024-57074-2Study on the material source and enrichment mechanism of REE-rich phosphorite in Zhijin, GuizhouJingya Wang0Zhongkun Qiao1Institute of Frontiers and Interdisciplinary Sciences, Zhejiang University of TechnologyInstitute of Frontiers and Interdisciplinary Sciences, Zhejiang University of TechnologyAbstract Rare earth element (REE)-rich phosphorite in the Guizhou region mainly exists in the Doushantuo Formation and Gezhongwu Formation in early Cambrian strata, which are some of the important strata containing phosphorite resources in China. The early Cambrian Zhijin phosphorite in Guizhou Province, China, has high rare earth element and yttrium (REY) contents of up to 2500 ppm, with heavy REY (HREY) contents accounting for ~ 30% of the total REY contents. However, the specific controlling source and environment of phosphorite (especially the REEs in Zhijin phosphorite) are still unsolved. Through field geological investigations; mineralogical, geochemical, Sr–Nd isotope analyses; and tectonic characteristics, the material source, sedimentary environment and seawater dynamics of REEs in phosphorite are studied. It is considered that the REEs enriched in the Zhijin phosphorite are mainly affected by precipitation from hydrothermal fluid. Moreover, from the late Ediacaran to the early Cambrian, the depositional environment from the bottom to the top of the water tended to be hypoxic, and the activity of hot water fluid tended to be strong. The change in redox conditions is closely related to the rise and fall of sea level. Combined with the tectonic background, these results show that the weakly oxidized environment may be an important factor controlling the enrichment of REEs. The enrichment of REEs may be closely related to volcanic hydrothermal activity, later diagenesis and seawater dynamics.https://doi.org/10.1038/s41598-024-57074-2Rare earth elementsMarine sedimentary phosphoriteGeochemical characteristicsMaterial sourcesSedimentary environments |
| spellingShingle | Jingya Wang Zhongkun Qiao Study on the material source and enrichment mechanism of REE-rich phosphorite in Zhijin, Guizhou Scientific Reports Rare earth elements Marine sedimentary phosphorite Geochemical characteristics Material sources Sedimentary environments |
| title | Study on the material source and enrichment mechanism of REE-rich phosphorite in Zhijin, Guizhou |
| title_full | Study on the material source and enrichment mechanism of REE-rich phosphorite in Zhijin, Guizhou |
| title_fullStr | Study on the material source and enrichment mechanism of REE-rich phosphorite in Zhijin, Guizhou |
| title_full_unstemmed | Study on the material source and enrichment mechanism of REE-rich phosphorite in Zhijin, Guizhou |
| title_short | Study on the material source and enrichment mechanism of REE-rich phosphorite in Zhijin, Guizhou |
| title_sort | study on the material source and enrichment mechanism of ree rich phosphorite in zhijin guizhou |
| topic | Rare earth elements Marine sedimentary phosphorite Geochemical characteristics Material sources Sedimentary environments |
| url | https://doi.org/10.1038/s41598-024-57074-2 |
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