Articles | Volume 35, issue 6
https://doi.org/10.5194/ejm-35-1009-2023
https://doi.org/10.5194/ejm-35-1009-2023
Research article
 | 
16 Nov 2023
Research article |  | 16 Nov 2023

Li–Na interdiffusion and diffusion-driven lithium isotope fractionation in pegmatitic melts

Christian R. Singer, Harald Behrens, Ingo Horn, Martin Oeser, Ralf Dohmen, and Stefan Weyer

Related authors

Depth profile analyses by femtosecond laser ablation (multicollector) inductively coupled plasma mass spectrometry for resolving chemical and isotopic gradients in minerals
Martin Oeser, Ingo Horn, Ralf Dohmen, and Stefan Weyer
Eur. J. Mineral., 35, 813–830, https://doi.org/10.5194/ejm-35-813-2023,https://doi.org/10.5194/ejm-35-813-2023, 2023
Short summary
Central Tethyan platform-top hypoxia during Oceanic Anoxic Event 1a
Alexander Hueter, Stefan Huck, Stéphane Bodin, Ulrich Heimhofer, Stefan Weyer, Klaus P. Jochum, and Adrian Immenhauser
Clim. Past, 15, 1327–1344, https://doi.org/10.5194/cp-15-1327-2019,https://doi.org/10.5194/cp-15-1327-2019, 2019
Short summary
Boron incorporation in the foraminifer Amphistegina lessonii under a decoupled carbonate chemistry
K. Kaczmarek, G. Langer, G. Nehrke, I. Horn, S. Misra, M. Janse, and J. Bijma
Biogeosciences, 12, 1753–1763, https://doi.org/10.5194/bg-12-1753-2015,https://doi.org/10.5194/bg-12-1753-2015, 2015
Short summary

Related subject area

Experimental petrology
Re-equilibration of quartz inclusions in garnet
Benjamin A. Pummell and Jay B. Thomas
Eur. J. Mineral., 36, 581–597, https://doi.org/10.5194/ejm-36-581-2024,https://doi.org/10.5194/ejm-36-581-2024, 2024
Short summary
H2 mobility and redox control in open vs. closed hydrothermal oceanic systems – evidence from serpentinization experiments
Colin Fauguerolles, Teddy Castelain, Johan Villeneuve, and Michel Pichavant
Eur. J. Mineral., 36, 555–579, https://doi.org/10.5194/ejm-36-555-2024,https://doi.org/10.5194/ejm-36-555-2024, 2024
Short summary
A brief history of solid inclusion piezobarometry
Ross J. Angel, Matteo Alvaro, and Silvio Ferrero
Eur. J. Mineral., 36, 411–415, https://doi.org/10.5194/ejm-36-411-2024,https://doi.org/10.5194/ejm-36-411-2024, 2024
Short summary
Depth profile analyses by femtosecond laser ablation (multicollector) inductively coupled plasma mass spectrometry for resolving chemical and isotopic gradients in minerals
Martin Oeser, Ingo Horn, Ralf Dohmen, and Stefan Weyer
Eur. J. Mineral., 35, 813–830, https://doi.org/10.5194/ejm-35-813-2023,https://doi.org/10.5194/ejm-35-813-2023, 2023
Short summary
A revised model for activity–composition relations in solid and molten FePt alloys and a preliminary model for characterization of oxygen fugacity in high-pressure experiments
Marc M. Hirschmann and Hongluo L. Zhang
Eur. J. Mineral., 35, 789–803, https://doi.org/10.5194/ejm-35-789-2023,https://doi.org/10.5194/ejm-35-789-2023, 2023
Short summary

Cited articles

Baasner, A., Schmidt, B. C., Dupree, R., and Webb, S. L.: Fluorine speciation as a function of composition in peralkaline and peraluminous Na2O–CaO–Al2O3–SiO2 glasses: A multinuclear NMR study, Geochim. Cosmochim. Ac., 132, 151–169, https://doi.org/10.1016/j.gca.2014.01.041, 2014. 
Barnes, E. M., Weis, D., and Groat, L. A.: Significant Li isotope fractionation in geochemically evolved rare element-bearing pegmatites from the Little Nahanni Pegmatite Group, NWT, Canada, Lithos, 132/133, 21–36, https://doi.org/10.1016/j.lithos.2011.11.014, 2012. 
Bartels, A., Vetere, F., Holtz, F., Behrens, H., and Linnen, R. L.: Viscosity of flux-rich pegmatitic melts, Contrib. Mineral. Petrol., 162, 51–60, https://doi.org/10.1007/s00410-010-0582-3, 2011. 
Bartels, A., Behrens, H., Holtz, F., Schmidt, B. C., Fechtelkord, M., Knipping, J., Crede, L., Baasner, A., and Pukallus, N.: The effect of fluorine, boron and phosphorus on the viscosity of pegmatite forming melts, Chem. Geol., 346, 184–198, https://doi.org/10.1016/j.chemgeo.2012.09.024, 2013. 
Bartels, A., Behrens, H., Holtz, F., and Schmidt, B. C.: The effect of lithium on the viscosity of pegmatite forming liquids, Chem. Geol., 410, 1–11, https://doi.org/10.1016/j.chemgeo.2015.05.011, 2015. 
Download
Short summary
Li is a critical element that is often enriched in pegmatites. To better understand the enrichment of Li in such systems, it is necessary to understand the underlying transport mechanisms. We performed experiments to investigate diffusion rates and exchange mechanisms of Li between a Li-rich and a Li-poor melt at high temperature and pressure. Our results indicate that fluxing elements do not increase the diffusivity of Li compared to a flux-free melt.