“…In general, the porphyry Mo deposits can be further subdivided into three subtypes (Chen et al, , ; and references therein) according to tectonic setting, deposit geology, as well as features of ore‐forming fluid and ore‐related intrusions, that is, the Endako‐ or subduction‐type (Deng, Chen, Santosh, & Yao, ; Lawley, Richard, Anderson, Creaser, & Heaman, ; Selby, Nesbitt, Muehlenbachs, & Prochaska, ; Wang, Chen, et al, ; Zhang & Li, ), the Climax‐ or rift‐type (Chen, Zhang, et al, ; Klemm, Pettke, & Heinrich, ; Seedorff & Einaudi, , ; Wallace, ), and the Dabie‐ or collision‐type (Chen et al, , ; Li et al, , ; Mi et al, ; Wang et al, ; Wu et al, ; Yang et al, , , ). In the Xishadegai Mo deposit, the main ore‐stage quartz contains abundant CO 2 ‐ and daughter minerals‐bearing inclusions, which is considered as a diagnostic marker of intracontinental/collisional magmatic hydrothermal systems (Chen & Li, ; Pirajno & Zhou, ; Zarasvandi et al, ). In addition, the anhydrous mineral assemblages of K‐feldspar, fluorite, and carbonate, with weak hydrous propylitic alteration, are considered to be caused by low H 2 O activity fluids with high K/Na, F/Cl, and CO 2 /H 2 O ratios (Chen et al, , ; Chen & Li, ; Pirajno & Zhou, ).…”