| Lat / long: | 43.76856, -103.55386 |
| Tertiary: | Beryllium, Mica, Tin |
| Other material: | Alabandite, Apatite, Beryl, Cassiterite, Muscovite, Quartz, Tourmaline |
| Discovery year: | 1880 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| First production started: | 1880 |
| MAS | 460330008 |
| DEP | 10226363 |
| Reference | {Deposit:: BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA, PT 2 . 1955, USBM I}{Deposit:: P 116.}{Deposit:: PAGE, LINCOLN R, ET AL, 1953, PEGMATITE INVESTIGATIONS, 1942}{Deposit:: USGS PROF PAPER 247, P 89-91.} |
| Reporter | Hite, Alan G. |