Abstract: The Hamaling Cu-Au-Mo Deposit is one of the important newly discoveries made recent⁃ ly in Tongling，it is characterized by strata-bound type+porphyry type+skarn type，which all belong to a uni⁃ fied magmatic hydrothermal metallogenic system.The deposit is located in the southwestern margin of the Tongling ore cluster area，the exploration degree in here is low.The Hamaling granodiorite as the main metallogenic magmatic rock geological body，in the past there were few systematic studies on it in geologi⁃ cal work，especially lacking of accurate isotopic chronological data.(LA-ICP-MS) U-Pb dating of zircon from the Hamaling granodiorite is conducted，it is concluded that its age is (140.4±1.9)～(137.7±1.1) Ma.It was formed in the Yanshanian period Early Cretaceous Epoch，which basically coincides with the diagene⁃ sis and mineralization period of the Tongling ore cluster area.The analysis results support the prospecting re⁃ sults of the Hamaling Cu-Au-Mo Deposit，and has important indicative significance for the prospecting work in this area.

Key words: zircon U-Pb age, granodiorite, Hamaling, Tongling ore cluster area