Syn-collisional magmatism at the Longgen Pb–Zn deposit, western Nyainqentanglha belt, Tibet: Petrogenesis and implications for regional polymetallic metallogeny

•The mineralization at the Longgen deposit occurred in the Paleocene.•Syn-collisional magmatism shows great potential for the formation of Pb-Zn/Fe-Cu mineralization.•Different magmatic sources are beneficial for different mineralization events.•Slab rollback and subsequent breakoff controlled the major mineralization events.