Fig. 6
Composition of micas from the Lithium-rich Tuff and other volcanic and intrusive rocks from the Macusani Volcanic Field (this study and6,10,12) in Nb/Ta versus Zr/Hf (A), Li ((B), Rb (C), Cs (D), and W (E) plots. The composition of micas in peraluminous granites associated with rare metal deposits12,35,37,38,39,40,41,42,43 and LCT pegmatites44,45,46 in the literature is shown for comparison. Lithium contents were determined by LA-ICP-MS. Compositions of micas in rare metal deposits and LCT pegmatites in the literature are not shown in plot A due to general lack of Hf data.
