Description
Prehistoric copper culture Native Americans
Commodities
PrimaryCopper
Commodity typeM
Deposit
Model96: Native Cu
Deposit sizeS
Orebody formFISSURE
Geology
Host rockBasalt · Portage Lake Volcanics
StructureSyncline, Fissure cross-cutting basalt flows
Economic & production
Development statusPast Producer
First production1847
Last production1855
Identification
Deposit ID10082644
MRDS IDW060082
RegionNA
Data scoreB
Coordinates48.1, -88.56672
References
LANE, A.C., 1898, UPPER PENINSULA, ISLE ROYALE: GEOLOGICAL SURVEY OF MICHIGAN, V. 6. PT. 1, 281 P.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. 239, SITE ID # 420082, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.LANE, 1898