| Lat / long: | 43.70216, -103.68617 |
| Tertiary: | Beryllium, Feldspar, Mica, Tin |
| Other material: | Alabandite, Beryl, Cassiterite, Columbite, Feldspar, Muscovite, Quartz, Spodumene, Tantalite, Tourmaline |
| Discovery year: | 1880 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| First production started: | 1880 |
| MAS | 460330009 |
| DEP | 10202275 |
| Reference | {Deposit:: PAGE, LINCOLN R, ET AL, 1953, PEGMATITE INVESTIGATIONS, 1942}{Deposit:: BLACKS HILLS, SOUTH DAKOTA. USGS PROP PAPER 247, P163-170.}{Deposit:: LINCOLN, FRANCIS C, 1937, THE MINING INDUSTRY OF SOUTH DAKOT}{Deposit:: SOUTH DAKOTA SCH OF MINES BULL 17, P31-2.} |
| Reporter | Hite, Alan G. |