Stability of aqueous neodymium complexes in carbonate-bearing solutions from 100–600 °C
Abstract Rare earth element exploration requires a quantitative understanding of factors governing their mobilization and economic concentration. However, the behavior of rare earth elements in carbonate-bearing hydrothermal fluids associated with carbonatite-hosted deposits is poorly understood, an...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-05-01
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| Series: | Communications Earth & Environment |
| Online Access: | https://doi.org/10.1038/s43247-025-02334-w |
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| author | Margaret E. Reece Artas A. Migdisov Anthony E. Williams-Jones Andrew C. Strzelecki Laura Waters Hakim Boukhalfa Xiaofeng Guo |
| author_facet | Margaret E. Reece Artas A. Migdisov Anthony E. Williams-Jones Andrew C. Strzelecki Laura Waters Hakim Boukhalfa Xiaofeng Guo |
| author_sort | Margaret E. Reece |
| collection | DOAJ |
| description | Abstract Rare earth element exploration requires a quantitative understanding of factors governing their mobilization and economic concentration. However, the behavior of rare earth elements in carbonate-bearing hydrothermal fluids associated with carbonatite-hosted deposits is poorly understood, and conflicting mechanisms of rare earth transport by anionic ligands and alkali behavior have been described. Here, we report quantitative data to characterize the role of carbonate-bearing solutions in the hydrothermal mobilization of neodymium. Solubility studies of neodymium phosphate were performed at temperatures ranging from 100 to 600 °C in carbonate-bearing solutions. The thermodynamic data determined for the predominant complex were used to model the separation of neodymium from thorium in a simple flow-through system based on fluid and mineral compositions characteristic of carbonatite deposits. Our data suggest that neodymium transport is controlled by the stability of the carbonate species NdCO3OHo, and at temperatures of 500–600 °C, the concentrations of neodymium in solutions can reach ~1000 ppm. |
| format | Article |
| id | doaj-art-d9be82d631324cb19e446566ad8acfb6 |
| institution | Kabale University |
| issn | 2662-4435 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Earth & Environment |
| spelling | doaj-art-d9be82d631324cb19e446566ad8acfb62025-08-20T03:53:14ZengNature PortfolioCommunications Earth & Environment2662-44352025-05-01611810.1038/s43247-025-02334-wStability of aqueous neodymium complexes in carbonate-bearing solutions from 100–600 °CMargaret E. Reece0Artas A. Migdisov1Anthony E. Williams-Jones2Andrew C. Strzelecki3Laura Waters4Hakim Boukhalfa5Xiaofeng Guo6Los Alamos National LaboratoryLos Alamos National LaboratoryMcGill UniversityLos Alamos National LaboratoryNew Mexico Institute of Mining and TechnologyLos Alamos National LaboratoryWashington State UniversityAbstract Rare earth element exploration requires a quantitative understanding of factors governing their mobilization and economic concentration. However, the behavior of rare earth elements in carbonate-bearing hydrothermal fluids associated with carbonatite-hosted deposits is poorly understood, and conflicting mechanisms of rare earth transport by anionic ligands and alkali behavior have been described. Here, we report quantitative data to characterize the role of carbonate-bearing solutions in the hydrothermal mobilization of neodymium. Solubility studies of neodymium phosphate were performed at temperatures ranging from 100 to 600 °C in carbonate-bearing solutions. The thermodynamic data determined for the predominant complex were used to model the separation of neodymium from thorium in a simple flow-through system based on fluid and mineral compositions characteristic of carbonatite deposits. Our data suggest that neodymium transport is controlled by the stability of the carbonate species NdCO3OHo, and at temperatures of 500–600 °C, the concentrations of neodymium in solutions can reach ~1000 ppm.https://doi.org/10.1038/s43247-025-02334-w |
| spellingShingle | Margaret E. Reece Artas A. Migdisov Anthony E. Williams-Jones Andrew C. Strzelecki Laura Waters Hakim Boukhalfa Xiaofeng Guo Stability of aqueous neodymium complexes in carbonate-bearing solutions from 100–600 °C Communications Earth & Environment |
| title | Stability of aqueous neodymium complexes in carbonate-bearing solutions from 100–600 °C |
| title_full | Stability of aqueous neodymium complexes in carbonate-bearing solutions from 100–600 °C |
| title_fullStr | Stability of aqueous neodymium complexes in carbonate-bearing solutions from 100–600 °C |
| title_full_unstemmed | Stability of aqueous neodymium complexes in carbonate-bearing solutions from 100–600 °C |
| title_short | Stability of aqueous neodymium complexes in carbonate-bearing solutions from 100–600 °C |
| title_sort | stability of aqueous neodymium complexes in carbonate bearing solutions from 100 600 °c |
| url | https://doi.org/10.1038/s43247-025-02334-w |
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