Lithium isotope behaviour during partial melting of metapelites from the Jiangnan Orogen, South China: Implications for the origin of REE tetrad effect of F-rich granite and associated rare-metal mineralization

Jiangnan Orogen, South China: A ~970–820 Ma Rodinia margin accretionary belt

“…The granites all contain peraluminous minerals such as muscovite, and display high ACNK values (e.g. Li et al, 2003a;Yao et al, 2014a;Chen et al, 2018). The granites in the southwest domain contain higher SiO2 compositions, as well as a higher proportion of older inherited grains (Fig.…”

“…Orogen (e.g. Guo et al, 1989Guo et al, , 1996Li et al, 2003a;Wang et al, 2006;Yao et al, 2014aYao et al, , 2014bXin et al, 2017;Chen et al, 2018).…”

Lithium Isotope Fractionation During Intensive Felsic Magmatic Differentiation

“…The three different phases in the Yaogangxian pluton are also derived from the same origin. Moreover, since the granites are enriched in Li by a factor as high as 1,000 relative to surrounding metasedimentary rocks (Chen et al., 2018), it requires contamination from very large volumes of metasedimentary rocks to potentially change the Li isotopes in granites during emplacement, which is very unlikely for those two plutons (Magna et al., 2016).…”

“…There have also been recent reports of Li isotope fractionation in highly evolved granites (Chen et al., 2018; Li et al., 2018). Because Li is a fluid‐mobile and fast‐diffusing element, its isotope fractionations in highly evolved granites and pegmatites have been mainly attributed to either fluid‐melt interaction or diffusion rather than equilibrium fractionation between the minerals and melts (Chen et al., 2018; Holycross et al., 2018; Li et al., 2018; Teng et al., 2006). Overall, there have been limited number of studies on the Li isotopic compositions of highly evolved granitic rocks, and the Li isotope fractionation that may occur during the evolution of granitic magmas has not been properly evaluated.…”

Sources and oxidation state of the Permian arc magmatic rocks of SW Jilin Province in the eastern Central Asian Orogenic Belt: evidence from Li, Hf isotopes and oxygen fugacity

“…;Magna et al 2010;Romer et al 2014;Chen et al 2018), which usually feature higher Li and lower δ 7 Li values.…”