The Jefferson property is situated along the Round Mountain-Northumberland Gold Trend, an Oligocene- to Miocene-age structural zone that hosts the Barrick/Kinross' +11,000,000 ounce Round Mountain Mine and the nearby Gold Hill gold mine and Newmont / New West Gold's Northumberland Mine, a Carlin-type, open pitted former gold producing mine.

 A major silver mineralization event occurred next at Jefferson, which provided the orebodies for mining in the 1870s to 1900, with possible average mined grades in excess of 20 ounces per tonne silver and lower gold values. One or more gold mineralization events appear to have followed the silver event, or there is mineral zoning with depth.