| Lat / long: | 43.75218, -103.52112 |
| Primary: | Feldspar, Mica |
| Tertiary: | Beryllium |
| Ore: | Beryl, Feldspar, Mica |
| Gangue: | Quartz, Sillimanite |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| Host rock: | Schist |
| Host type: | Schist |
| Associated rock: | Pegmatite |
| Associated type: | Pegmatite |
| Alteration processes: | Most Of The Mica Is Badly Stained |
| MRDS | SD02282 |
| DEP | 10104252 |
| Reference | {Deposit:: U. S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707}{Deposit:: ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18}{Production:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707} |
| Reporter | Barari, Rachel A. |