“…These data lead us to argue that the epithermal gold deposits in the Lesser Xing'an Range and Zhangguangcai Range formed mainly between 124 and 107 Ma (Table ; Figure ). The mineralization ages of the epithermal gold deposits in the Zhangguangcai Range are also similar to the porphyry or porphyry‐hydrothermal vein Cu–Au deposit at Xiaoxinancha and Nongping in the Zhangguangcai Range (Han, Sun, Bai, et al, ; Han, Sun, Xing, et al, ; Ouyang et al, ; Ren et al, ; Shu et al, ; Wang et al, ; Zeng, Guo, Zhou, & Duan, ) which Xiaoxinancha Cu–Au deposit has Molybdenite Re–Os age of 111.1 ± 3.1 (Ren, Wang, Qu, Zhao, & Chu, ). Recently, Shu et al () argued that the Cretaceous porphyry Mo and Cu mineralization and associated magmatism define a southeastward‐younging trend,i.e., from 140 to 125 Ma in the Great Xing'an Range to 125–95 Ma in the Zhangguangcai Range and north‐eastern margin of North China Craton (Figure a).…”