Fig. 7: The enrichment of lithium during crustal anatexis.
From: Experimental constraints on the sources of lithium-rich granites and pegmatites
a The enrichment of lithium in the partial melts of the experiments from this study and the ‘Pg’ experiment of Michaud et al.25. Filled circles represent fluid-absent melting experiments, whereas open circles represent glasses from crystallisation, fluid-present, or high-temperature experiments. The modelled, lower, and upper estimates of lithium enrichment were calculated using the mean, minimum, and maximum values of partition coefficients, respectively, and the modal mineralogy of the fluid-absent melting experiments. b Comparison of the experimental and modelled lithium contents in partial melts. The error bars represent the standard deviation of the mean (1σm). c The enrichment of lithium during the partial melting of crustal rocks of diverse compositions, taken from Franceschelli et al. (‘Mb’; 1000 and 2290 ppm lithium)61, Knoll et al. (‘RS34/01’; 229 ppm lithium)11, and Koopmans et al. (‘Granite–Greywacke source’; 538 ppm lithium)13. d Sensitivity test of the trace element model to highlight the effect of biotite breakdown during the anatexis of the FM1 micaschist. The effect of using variable \({D}_{{{\rm{Li}}}}^{{{\rm{Mineral}}}/{{\rm{Melt}}}}\) from previous experimental studies is demonstrated by the dashed lines.
