Gemstone Mines in Montana
13Total Sites
3Active
Gemstone Mining in Montana
Montana has 13 gemstone-related mine and mineral deposit locations recorded in federal databases. Of these, 3 are currently active operations. Data comes from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records.
The earliest recorded gemstone mine in Montana is Yogo Sapphire Mine in Judith Basin County, with records dating to 1895.
By County
| County | Sites |
|---|---|
| Jefferson County | 3 |
| Lewis and Clark County | 3 |
| Beaverhead County | 2 |
| Granite County | 2 |
| Powell County | 2 |
| Judith Basin County | 1 |
Gemstone Mines
| Mine | County | Type | Status |
|---|---|---|---|
| El Dorado Bar Sapphire Mine | Powell | Surface | Producer |
| French Bar Underwater | Lewis and Clark | Offshore | Producer |
| Yogo Sapphire Mine | Judith Basin | Producer | |
| Blue Star #1 | Beaverhead | Unknown | |
| Danas Bar | Lewis and Clark | Placer | Past Producer |
| Dumortierite Prospect | Jefferson | Occurrence | |
| Jewel Mountain Mining Co. | Lewis and Clark | Surface | Unknown |
| Pohndorf Amethyst | Jefferson | Past Producer | |
| Pohndorf Mine | Jefferson | Past Producer | |
| Skalkaho Grazing Co. | Granite | Placer | Past Producer |
| Squaw Creek Lode | Beaverhead | Underground | Prospect |
| Unnamed | Powell | Occurrence | |
| Unnamed Gemstone Deposit | Granite | Occurrence |