| Lat / long: | 43.70329, -103.62667 |
| Primary: | Mica |
| Secondary: | Beryllium, Feldspar |
| Ore: | Beryl, Feldspar, Mica |
| Gangue: | Albite, Garnet, Quartz, Tourmaline, Xenotime |
| Orebody form: | ELONGATED DIKE |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1900 |
| Host type: | Mica Schist,Pegmatite |
| Associated type: | Pegmatite |
| Structure: | Well-Developed Folds Plunge 40-50 Deg, S12-15w |
| Alteration processes: | Some Parts Of The Pegmatite Are Severely Altered |
| MRDS | D008114 |
| DEP | 10012469 |
| 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.}{Deposit:: USGS PP 247, P. 146-148.}{Production:: USBM INFO CIRC 7707, P. 153; USGS PP 247, P. 146.} |
| Reporter | Barari, Rachel A. |