Commodities
PrimaryCopper
Commodity typeM
Deposit
Model96: Native Cu
Deposit sizeS
Orebody formCONGLOMERATE LODE
Geology
Host rockConglomerate · Portage Lake Volcanics
StructureSyncline, Copper-bearing interflow conglomerate associated with basalt flows
Economic & production
Development statusPast Producer
First production1872
Last production1877
Discovery year1872
Identification
Deposit ID10082642
MRDS IDW060080
RegionNA
Data scoreB
Coordinates47.91667, -89.0334
References
LANE, A.C., 1898, UPPER PENINSULA, ISLE ROYALE: GEOLOGICAL SURVEY OF MICHIGAN, V. 6, PT.1, 281 PP.HUBER, N.K., 1973, GEOLOGIC MAP OF ISLE ROYALE NATIONAL PARK, KEWEENAW COUNTY, MICHIGAN: USGS MISC. GEOL. INVEST., MAP I-796, SCALE 1:62500JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, KEWEENAW COUNTY, P. 149 , SITE ID # 420045, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.LANE, 1898