European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 38, issue 4
Articles | Volume 38, issue 4
https://doi.org/10.5194/ejm-38-497-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-38-497-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 38, issue 4
Research article
 | 
06 Aug 2026
Research article |  | 06 Aug 2026

A novel experimental approach to investigate element transport and isotope fractionation of Li and B in pegmatitic systems during fluid–melt interaction

Christian Ronny Singer, Harald Behrens, Ingo Horn, Martin Oeser, Stefan Weyer, and François Holtz

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Short summary
We developed a novel experimental setup to investigate the transport of Li and B between two melt reservoirs that were connected only via a fluid phase. This was used to simulate fluid exsolution occurring during late-stage pegmatite formation. We found that both Li and B were transported via the fluid, but the observed transport rates were low. It was shown experimentally that the Li isotopes fractionate between melt and fluid with the fluid being preferentially enriched in the heavier 7Li.
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