As an important post-collisional magmatic product in the orogenic belt, the Himalayan
leucogranites are the critical host rocks for a number of rare-metal mineralization (such as Li,
Be, Cs, Rb, Nb, Ta, and Sn). However, there is still a lack of good understanding on the
formation and evolution of the leucogranites. Particularly, the role of the magmatic fluids in
transporting and enriching the rare elements is not clear. Here we measure Ba isotope
compositions for leucogranites from the Kampa Dome of the Himalayan belt to understand …