There are no ages for Tetrahedrite-(Zn) at Railroad Copper-Gold Property (Bullion Copper-Gold Project; Polymetallic Prospect; Nevada Bunker Hill Mines; Aladdin Claim; Blue Sky Claim; Tripoli Claim; Webfoot Claim; Mahogany Claim; Standing Elk Claim; Hoffman Claim; Mounted Ledge Claim; Bullion Claim, Railroad District, Elko Co., Nevada, USA