Origin and evolution of ore fluids in the late Mesozoic Naozhi epithermal Au–Cu deposit, Yanbian area, Northeast China: evidence from fluid inclusion and isotopic geochemistry - A-Lei Gu; Lan-jing Men; Jing-Gui Sun; Keisuke Nagao; Ling-An Bai; Long-pei Cui; Peng Chai; Yan-jun Chen; Jun-quan Zhu (Arabian Journal of Geosciences, 2016)