The 40Ar–39Ar dating of biotite in ore veins and zircon U–Pb dating of porphyrtic granite dyke in the Nanyangtian tungsten deposit in SE Yunnan, China

•High precise 40Ar–39Ar ages of biotite are from 97.49 ± 0.97 Ma and 99.48 ± 0.97 Ma.•A zircon U–Pb age of porphyritic granite dyke is 89.88 ± 0.53 Ma.•Nanyangtian deposit is closely related to the first stage of Laojunshan Cretaceous granite.•The Sn–W deposits in SW Cathaysia block formed contemporaneously in Late Cretaceous and experienced a same geodynamic setting.