| Lat / long: | 47.38528, -88.29476 |
| Primary: | Copper |
| Secondary: | Silver |
| Ore: | Copper, Silver |
| Operation type: | Unknown |
| Deposit type: | Vein |
| Production size: | Small |
| Development status: | Past Producer |
| Production years: | 1846-1905 FOR PHOENIX MINE 1865-1867 FOR BAY STATE MINE |
| First production started: | 1844 |
| Last production ended: | 1931 |
| Host rock: | Portage Lake Volcanics |
| Host type: | Basalt |
| Structure: | Syncline, Fissure cutting the Greenstone flow, mining activity south of flow |
| MRDS | W060053 |
| DEP | 10082616 |
| Reference | {Deposit:: BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF PAPER NO. 144, 238 PP}{Deposit:: CORNWALL, H.R., 1954, BEDROCK GEOLOGY OF THE PHOENIX QUADRANGLE, MICHIGAN: USGS MAP GQ-34, SCALE 1:24000}{Deposit:: JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, KEWEENAW COUNTY, P. 23-24, 211-227, 233-235, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}{Production:: BUTLER AND BURBANK, 1929} |
| Reporter | Nicholson, Suzanne, Sutphin, D.M., Mason Jr., G.T., Anderson, Arlene (M. Gere) |