Discovery of Miocene pegmatite type Be-Nb-Ta(-Rb)mineralization in the Yangbajain of Central Lhasa subterrane,Tibet

1.Objective As the strategic critical mineral resources,rare metals are economically valuable in their prospecting exploration.The geochemical map of China’s 1∶50000 beryllium shows that there are obviously positive anomalies in the southwest of Tibet,which are distributed in two approximately parallel belts,roughly overlapping with the Himalayan leucogranite belt in the south and the central Lhasa subterrane in the north,respectively.