Origin of biotite-rich xenoliths in the Eocene Beiya porphyry: Implications for upper-crustal Au remobilization and formation of giant porphyry Au systems in a collisional setting - Ye Zhou; Zengqian Hou; Rui Wang; Bo Xu; Noreen J. Evans; Wenyan He; Yuanchuan Zheng; Jiaxi Zhou (Lithos, 2023)