| Lat / long: | 43.87635, -103.36778 |
| Primary: | Feldspar, Beryllium |
| Ore: | Beryl, Feldspar |
| Gangue: | Albite, Apatite, Cassiterite, Cleavelandite, Columbite, Goethite, Graphite, Microcline, Muscovite, Opal, Plagioclase, Quartz, Spodumene, Tourmaline, Uraninite, Uranophane, Vivianite, Zircon |
| Orebody form: | TABULAR DIKE |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| Host type: | Pegmatite |
| Associated type: | Pegmatite |
| Structure: | The Pegmatite Is On The Southern End Extremity Of A N-S Ridge. |
| Alteration processes: | Iron-Stained |
| MRDS | D008116 |
| DEP | 10012470 |
| Reference | {Deposit:: USBM INFO CIRC 7707, P. 71-72.}{Deposit:: DANAS SYSTEM OF MINERALOGY, ED VOL 2, P. 952-953.}{Deposit:: ENCYCLOPEDIA OF MINERALS}{Deposit:: SPRING, S. G., AND ANDERSON, D. W., 1957, A GEOLOGIC INVESTIGATION OF THE FERGUSON PEGMATITE, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY.}{Production:: USBM INFO CIRC 7707, P. 72.} |
| Reporter | Barari, Rachel A. |