The site is rich with minerals, including gold, silver, antimony (found naturally within stibnite, for which the region is named) and tungsten.

[5][6] In 2009, a Canadian company known as Midas Gold began test drilling on private land within the district, evaluating it for future mining potential.

[10] Continental drift pushed the denser oceanic plate under the North American Plate, where immense heat, pressure and superheated water caused the rocks to melt, rise and then slowly cool, creating the vast expanse of crystalline granite underneath most of central Idaho.

These hot fluids contained gold, silver, antimony and sulfur which, as the waters cooled,[11] left behind minerals like pyrite, stibnite and scheelite.

The partnership of the Idaho Batholith cooling and interacting with volcanic forces, and mineral-rich fluids, created a geologic region that has captured the attention and imagination of geologists and prospectors for more than 100 years.