Mine detail: Island Mine

Previously called ''

<< Back to the map

Location

Lat / long: 47.91667, -89.0334

Resource(M)

Primary: Copper
Ore: Copper
Orebody form: CONGLOMERATE LODE
Discovery year: 1872

Production

Operation type: Underground
Production size: Small
Development status: Past Producer
First production started: 1872
Last production ended: 1877

Geology

Host rock:Portage Lake Volcanics
Host type:Conglomerate
Structure:Syncline, Copper-bearing interflow conglomerate associated with basalt flows

References

MRDSW060080
DEP10082642
Reference{Deposit:: LANE, A.C., 1898, UPPER PENINSULA, ISLE ROYALE: GEOLOGICAL SURVEY OF MICHIGAN, V. 6, PT.1, 281 PP.}{Deposit:: HUBER, N.K., 1973, GEOLOGIC MAP OF ISLE ROYALE NATIONAL PARK, KEWEENAW COUNTY, MICHIGAN: USGS MISC. GEOL. INVEST., MAP I-796, SCALE 1:62500}{Deposit:: JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, KEWEENAW COUNTY, P. 149 , SITE ID # 420045, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}{Production:: LANE, 1898}
ReporterMason Jr., G.T., Anderson, Arlene (M. Gere), Nicholson, Suzanne, Sutphin, D.M.