| Lat / long: | 46.81917, -89.57926 |
| Primary: | Silver |
| Ore: | Silver |
| Operation type: | Unknown |
| Production size: | Unknown |
| Development status: | Occurrence |
| First production started: | 1873 |
| Host rock: | Portage Lake Volcanics |
| Host type: | Basalt |
| Structure: | Syncline |
| MRDS | LW00188 |
| DEP | 10310188 |
| Reference | JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, ONTONAGON COUNTY, SITE ID # 660048, MICHIGAN DEPARTMENT OF NATURAL RESOURCES. |
| Reporter | Anderson, Arlene (M. Gere) |