2455 Old Penitentiary Road

Boise, ID 83712 (Next to the Old Pen)

Current Hours

Saturdays 12-5pm. Sundays are for special events, and by pre-registration only. View EVENTS for details.

Free Admission!

Tours and other programs available.

Idaho Minerals & Gems

There’s something unique about each part of Idaho, including its local geology. The museum has an extensive collection of rocks, minerals, and gems from each region—from the mining districts of northern Idaho, the rocky batholith of Idaho’s central mountains, and the volcanically active Snake River plain.

These study guides (requires  Adobe Reader) highlight each of Idaho’s mining districts, whose minerals are on display at the museum:  Northern IdahoEast Central IdahoWest Central IdahoSouth Central IdahoSouthwest Central Idaho, Southeastern IdahoSouthwestern IdahoFar Western Idaho.