| Lat / long: | 43.41964, -107.9779 |
| Primary: | Feldspar, Niobium (Columbium), Beryllium |
| Secondary: | Tantalum |
| Operation type: | Underground |
| Development status: | Past Producer |
| MAS | 560131099 |
| DEP | 10181496 |
| Reference | {Deposit:: ALSO LOCATED IN SEC. 28, T40N, R93W}{Deposit:: PRODUCTION FOR GLASS AND CERAMICS, DEPOSIT IN PEGMATITE}{Deposit:: WYO INDUSTRIAL MINS GUIDEBOOK, 1975, WYO GEOL SURVEY OPEN FI}{Deposit:: LES, P. 31} |
| Reporter | South Dakota School of Mines |