Origin of the Badaguan porphyry Cu Mo deposit, Inner Mongolia, northeast China: Constraints from geology, isotope geochemistry and geochronology

The Badaguan porphyry CuMo deposit is located in the Derbugan metallogenic belt of northeastern Inner Mongolia, China. The host granodioritic porphyry and the wall rock granitic porphyry were emplaced at 230 Ma and 238 Ma, respectively. The granodioritic porphyry has (87Sr/86Sr)i values of 0.70535–0.70549, εNd(t) values of 0.41–1.17, εHf(t) values of 1.30–6.51, and two–stage model ages (TDM2) of 1131–848 Ma. In contrast, the granitic porphyry is...