| Lat / long: | 46.91658, -110.53417 |
| Primary: | Tungsten, Gemstone, Gold |
| Operation type: | Unknown |
| Production size: | Yes |
| Development status: | Producer |
| Host type: | Limestone,Granite |
| MRDS | D001514 |
| DEP | 10008955 |
| Reference | FREEMAN, O.W., 1915, THE SAPPHIRE MINES OF YOGO, MONTANA: MINING AND SCIENTIFIC PRESS, V. 110, P. 800-80 |
| Reporter | Fisher, Fred S. |