Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts

Abstract : 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 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 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.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal-brgm.archives-ouvertes.fr/hal-03554091
Contributeur : Johann Tuduri Connectez-vous pour contacter le contributeur
Soumis le : mardi 8 février 2022 - 18:06:44
Dernière modification le : mercredi 3 août 2022 - 04:06:00
Archivage à long terme le : : lundi 9 mai 2022 - 20:29:23

Fichier

CRGEOS_2021__353_S2_233_0.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Licence


Distributed under a Creative Commons Paternité 4.0 International License

Identifiants

Collections

Citation

Zineb Nabyl, Fabrice Gaillard, Johann Tuduri, Ida Di Carlo, Ida Di Carlo. No direct effect of F, Cl and P on REE partitioning between carbonate and alkaline silicate melts. Comptes Rendus. Géoscience, Académie des sciences (Paris), 2021, 353 (S2), pp.233-272. ⟨10.5802/crgeos.104⟩. ⟨hal-03554091⟩

Partager

Métriques

Consultations de la notice

78

Téléchargements de fichiers

39