In-situ U–Pb geochronology of Ti-bearing andradite as a practical tool for linking skarn alteration and Pb–Zn mineralization: A case study of the Mengya’a deposit, tibet

•This study first highlights the importance of melanite in-situ U-Pb geochronology.•Mineralization at the Mengya’a deposit is precisely identified at 55–52 Ma.•Ti-bearing andradites will potentially become an invaluable geochronological tool for skarn Pb-Zn deposits.