Ages for Muscovite at Shuangfengshan Au Deposit (Twin Peaks Au Deposit), Twin Peaks Area, Barkol Co. (Barköl Co.; Balikun Co.), Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 270Ma - 182Ma at this locality