| Lat / long: | 44.65073, -108.28883 |
| Primary: | Bentonite |
| Operation type: | Unknown |
| Development status: | Occurrence |
| MAS | 560030167 |
| DEP | 10205375 |
| Reference | {Deposit:: A 4FT LAYER OF BENTONITE 18 MI. NW OF GREYBULL}{Deposit:: IN FRONTIER FM ABOUT 3 FT ABOVE TOP OF THE PEAY SANDSTONE}{Deposit:: MEMBER}{Deposit:: WYO GEOL SURV BULL #50 1966 P 13} |
| Reporter | South Dakota School of Mines |