Ages for Powellite at Hilton Mines (Hilton Mine Group; Hiltano Group; Hiltano & State Of Maine Group), Hilton Ranch, Copper Camp, Hilton (Lead Mountain), Empire District, Empire Mts, Pima Co., Arizona, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1405Ma - 1345Ma at this locality