| Location: | Pennington County, South Dakota, United States, North America |
| Lat / long: | 43.85079, -103.39362 |
| dep_id: | 10055645 |
| mrds_id: | SD02250 |
| Commodity type: | metallic and nonmetallic |
| Major mineral: | Feldspar, Beryllium, Mica |
| Operation type: | Unknown |
| Production size: | No production occurred |
| Development status: | Occurrence |
| ore: | Beryl, Biotite, Feldspar, Microcline, Muscovite |
| gangue: | Tourmaline |
| Reporter: | Barari, Rachel A. |
| hrock_type: | Pegmatite |
| arock_unit: | Pegmatite;Graphitic Granite |
| arock_type: | Granite |
| References: |
- U. S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 770
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