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通过对鹦鹉岭铜多金属矿床6件辉钼矿样品的Re-Os同位素定年,获得的模式年龄为82.96Ma～84.75Ma。其中1件矽卡岩型矿石中辉钼矿的187 Re-187 Os模式年龄为82.96Ma±1.2Ma,5件石英脉型矿石中辉钼矿的187 Re-187 Os模式年龄为83.78 Ma～84.75Ma,加权平均值为84.08 Ma±0.54 Ma,对应的等时线年龄为83.0 Ma±1.7 Ma,模式年龄和等时线年龄结果在误差范围内基本一致,指示鹦鹉岭多金属矿床的成矿时限为82.96Ma～84.75Ma,即形成于晚白垩世。鹦鹉岭矿床辉钼矿样品的Re含量较低,表明其成矿物质主要来自于壳源。该矿床形成于燕山晚期岩石圈伸展减薄环境。
Based on the Re-Os isotope dating of six molybdenite samples from the Parrot Ridge copper polymetallic deposit, the model age was 82.96Ma-84.75Ma. The 187 Re-187 Os model age of molybdenite in one skarn ore is 82.96Ma ± 1.2Ma. The 187 Re-187 Os model age of molybdenite in five quartz vein types ore is 83.78 Ma ~ 84.75 Ma with a weighted average of 84.08 Ma ± 0.54 Ma and a corresponding isochron age of 83.0 Ma ± 1.7 Ma. The age of the model and the isochron age are basically the same within the error range, indicating that the mineralization time limit of the Parrot Ridge Polymetallic Deposit Is 82.96Ma ~ 84.75Ma, that is formed in the Late Cretaceous. The low Re content of the molybdenite samples from the Parrot Ridge deposit indicates that the metallogenic materials mainly come from the crust source. The deposit formed in the Late Yanshanian lithosphere stretch thinning environment.