Late Mesozoic post-orogenic granitoids and its metallogenic implications: Constraints from Nantai porphyry Mo deposit, Northern Qinling, China

•The fO2 of ore-forming magma at Nantai is suitable for forming a porphyry Mo deposit.•Nantai granitoids are derived from partial melting of lower crust with mantle contribution.•Nantai deposit formed in a compression to extensional transition regime.