| Lat / long: | 46.87771, -110.29393 |
| Primary: | Sapphire |
| Discovery year: | 1894 |
| Operation type: | Surface |
| Development status: | Producer |
| First production started: | 1895 |
| MRDS | W013397 |
| MAS | 300450088 |
| DEP | 10148934 |
| Reference | {Deposit:: MONTANA BUREAU OF MINES & GEOLOGY MEMOIR 31, 1949, P. 47.}{Deposit:: MONTANA BUREAU OF MINES & GEOLOGY IC 20, 1957, P. 26.}{Deposit:: U.S. BUREAU OF MINES IC 7602, 1951, P. 41-42.}{Deposit:: U.S. BUREAU OF MINES, 1994, DIRECTORY OF PRINCIPAL U.S.}{Deposit:: GEMSTONE PRODUCERS IN 1993; U.S. BUREAU OF MINES MINERAL}{Deposit:: INDUSTRY SURVEYS, P. 33.} |
| Reporter | Ridenour, James |