No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts
This study presents new insights into the effects of halogens (F and Cl) and phosphorous (P) on rare earth element (REE) partitioning between carbonatite and alkaline silicate melts. F, Cl and P are elements that are abundant in carbonatites and alkaline magmatic systems and they are considered to p...
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| Format: | Article |
| Language: | English |
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Académie des sciences
2022-01-01
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| Series: | Comptes Rendus. Géoscience |
| Subjects: | |
| Online Access: | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.104/ |
| _version_ | 1797651296789987328 |
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| author | Nabyl, Zineb Gaillard, Fabrice Tuduri, Johann Carlo, Ida Di |
| author_facet | Nabyl, Zineb Gaillard, Fabrice Tuduri, Johann Carlo, Ida Di |
| author_sort | Nabyl, Zineb |
| collection | DOAJ |
| description | This study presents new insights into the effects of halogens (F and Cl) and phosphorous (P) on rare earth element (REE) partitioning between carbonatite and alkaline silicate melts. F, Cl and P are elements that are abundant in carbonatites and alkaline magmatic systems and they are considered to play an important role on the REE behaviour. Nonetheless, their effect on REE partitioning between carbonate and alkaline silicate melts has not yet been constrained.Here we present new experimental data on REE partitioning between carbonate and alkaline silicate melts doped in F, Cl and P, in order to (1) test the Nabyl et al. [2020] REE partitioning model in F-, Cl- and P-rich systems, and (2) identify the possible role of F, Cl and P in carbonate melt REE enrichments during alkaline–carbonatite magma differentiation. The experiments were performed at 850–1050 °C and 0.8 GPa using piston-cylinder devices. Starting materials consisted of carbonatite and phonolite compositions ${\pm }$ doped in F, Cl and P. The experimental results show that REE partitioning is similar in F-Cl-P-rich and -poor systems. The silicate melt composition and its molecular structure (i.e. SiO$_{2}$ contents, the alumina saturation index and the alkali/alkaline-earth element ratio), which have already been identified as controlling REE partitioning in F-, Cl- and P-poor systems, still operate in doped systems. No direct effect of the F, Cl or P melt concentrations on REE partitioning has been identified. We also propose an application to natural systems. |
| first_indexed | 2024-03-11T16:13:58Z |
| format | Article |
| id | doaj.art-2443a8ca506448f5a29cff83291537a1 |
| institution | Directory Open Access Journal |
| issn | 1778-7025 |
| language | English |
| last_indexed | 2024-03-11T16:13:58Z |
| publishDate | 2022-01-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Géoscience |
| spelling | doaj.art-2443a8ca506448f5a29cff83291537a12023-10-24T14:24:20ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252022-01-01353S223327210.5802/crgeos.10410.5802/crgeos.104No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate meltsNabyl, Zineb0Gaillard, Fabrice1Tuduri, Johann2Carlo, Ida Di3ISTO, UMR 7327, Université d’Orléans, CNRS, BRGM, F-45071 Orléans, FranceISTO, UMR 7327, Université d’Orléans, CNRS, BRGM, F-45071 Orléans, FranceBRGM, F-45060 Orléans, France; ISTO, UMR 7327, Université d’Orléans, CNRS, BRGM, F-45071 Orléans, FranceISTO, UMR 7327, Université d’Orléans, CNRS, BRGM, F-45071 Orléans, FranceThis study presents new insights into the effects of halogens (F and Cl) and phosphorous (P) on rare earth element (REE) partitioning between carbonatite and alkaline silicate melts. F, Cl and P are elements that are abundant in carbonatites and alkaline magmatic systems and they are considered to play an important role on the REE behaviour. Nonetheless, their effect on REE partitioning between carbonate and alkaline silicate melts has not yet been constrained.Here we present new experimental data on REE partitioning between carbonate and alkaline silicate melts doped in F, Cl and P, in order to (1) test the Nabyl et al. [2020] REE partitioning model in F-, Cl- and P-rich systems, and (2) identify the possible role of F, Cl and P in carbonate melt REE enrichments during alkaline–carbonatite magma differentiation. The experiments were performed at 850–1050 °C and 0.8 GPa using piston-cylinder devices. Starting materials consisted of carbonatite and phonolite compositions ${\pm }$ doped in F, Cl and P. The experimental results show that REE partitioning is similar in F-Cl-P-rich and -poor systems. The silicate melt composition and its molecular structure (i.e. SiO$_{2}$ contents, the alumina saturation index and the alkali/alkaline-earth element ratio), which have already been identified as controlling REE partitioning in F-, Cl- and P-poor systems, still operate in doped systems. No direct effect of the F, Cl or P melt concentrations on REE partitioning has been identified. We also propose an application to natural systems.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.104/Immiscibility processesCarbonatitesAlkaline magmaHalogensPhosphorousRare earth elementsImmiscibility processes |
| spellingShingle | Nabyl, Zineb Gaillard, Fabrice Tuduri, Johann Carlo, Ida Di No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts Comptes Rendus. Géoscience Immiscibility processes Carbonatites Alkaline magma Halogens Phosphorous Rare earth elements Immiscibility processes |
| title | No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts |
| title_full | No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts |
| title_fullStr | No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts |
| title_full_unstemmed | No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts |
| title_short | No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts |
| title_sort | no direct effect of f cl and p on ree partitioning between carbonate and alkaline silicate melts |
| topic | Immiscibility processes Carbonatites Alkaline magma Halogens Phosphorous Rare earth elements Immiscibility processes |
| url | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.104/ |
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