| Lat / long: | 43.93356, -103.58476 | 
| Tertiary: | Beryllium, Mica, Tungsten, Tin | 
| Other material: | Beryl, Cassiterite, Feldspar, Graphite, Muscovite, Quartz, Wolframite | 
| Operation type: | Underground | 
| Development status: | Past Producer | 
| MAS | 461030003 | 
| DEP | 10202103 | 
| Reference | {Deposit:: BLACK HILLS MINERAL ATLAS, SOUTH DAK, PT 2. 1955, USBM IC 77}{Deposit:: GARDNER, E D, 1939, TIN DEPOSITS IN THE BLACK HILLS, SOUTH D}{Deposit:: USBM IC 7069, P 35.}{Deposit:: HESS, FRANK L, 1908, TIN, TUNGSTEN, AND TANTALUM IN SOUTH DA}{Deposit:: USGS BULL 380, P 142-3.}{Deposit:: PAGE, LINCOLN R, ET AL, 1953, PEGMATITE INVESTIGATIONS, 1942}{Deposit:: BLACK HILLS, SOUTH DAKOTA. USGS PROF PAPER 247. P 203.} | 
| Reporter | Hite, Alan G. |