| Lat / long: | 46.99631, -109.26718 |
| Primary: | Gypsum-Anhydrite |
| Ore: | Gypsum |
| Orebody form: | BLANKET |
| Discovery year: | 1905 |
| Operation type: | Unknown |
| Deposit type: | Sedimentary |
| Production size: | Yes |
| Development status: | Producer |
| First production started: | 1916 |
| Host rock: | Ellis Formation Shale, Limestone |
| Host type: | Shale,Limestone |
| Structure: | North Flank Of The Big Snowy Mts |
| MRDS | W013402 |
| DEP | 10070459 |
| Reference | PERRY, E. S., 1949, GYPSUM, LIME, AND LIMESTONE IN MONTANA: MONT. BUREAU OF MINES AND GEOLOGY MEM. 29, P. 6 - 8 |
| Reporter | Berg, Richard B. (Krohn, D. H.) |