| Lat / long: | 43.7294, -103.68168 |
| Primary: | Feldspar, Beryllium |
| Tertiary: | Mica |
| Ore: | Beryl, Mica, Microcline |
| Gangue: | Quartz |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| Host type: | Pegmatite |
| Associated type: | Pegmatite,Granite |
| MRDS | SD02528 |
| DEP | 10055778 |
| Reference | U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707, P. 195 |
| Reporter | Barari, Rachel A. |