U-Pb dating of monazite in the Bainiuchang silver polymetallic deposit, Yunnan Province, and its limitation on Mesozoic mineralization - Bo-de Lu; Wen-chang Li; Xue-long Liu; Guang-zhi Meng; Qi-he Long; Hong Zhang; Jun-shan Dao; Fang-lan Li; Jie-hu Zhou; Mao-huang Fan; Xue Mi; Nan Shi; et al. (China Geology)