Data for original research of Lithium isotopes of granites in South China Table 1. Major elemental compositions (in wt.%) for granites from the Xihuashan and Yaogang Xian Table 2. Li isotopic and selected trace elemental compositions (ppm) for granites from the Xihuashan and Yaogangxian plutons Table 3. Li concentration and Li isotopic compositions of mineral separated from granites and greisen of the Xihuashan pluton Table S1. Chemical compositions of mica from granites in the Xihuashan pluton Table S2. Major and trace element compositions of K-feldspar from granites in the Xihuashan pluton. Table S3. Trace element compositions of zircon from granites in the Xihuashan pluton Table S4. Parameters used for the Rayleigh crystal fractionation modelling