| Lat / long: | 43.81746, -103.42556 |
| Tertiary: | Mica, Niobium (Columbium), Tantalum |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| MAS | 461030081 |
| DEP | 10251422 |
| Reference | {Deposit:: NORTON J J PAGE L R AND BROBST D A GEOLOGY OF THE HUGO PEGMA}{Deposit:: YSTONE S DAKOTA U S GEOL SURVEY PROF PAPER 297-A 1962 P 127}{Deposit:: POCKET}{Deposit:: U S BUMINES STAFF REGION V BLACK HILLS MINERAL ATLAS SOUTH D}{Deposit:: PART 2 INFO CIRC 7707 1955 P74} |
| Reporter | South Dakota School of Mines |