Commodities
PrimaryCopper
Commodity typeM
Deposit
Model96: Native Cu
Deposit sizeS
Geology
Host rockBasalt · Portage Lake Volcanics
StructureAshbed amygdaloid and several fissures
Economic & production
Development statusPast Producer
First production1862
Last production1877
Identification
Deposit ID10082632
MRDS IDW060070
RegionNA
Data scoreB
Coordinates47.42861, -88.19976
References
BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF. PAPER NO. 144, 238 PP.CORNWALL, H.R., AND WRIGHT, J.C., 1954, BEDROCK GEOLOGY OF THE EAGLE HARBOR QUADRANGLE, MICHIGAN: USGS MAP GQ-36, SCALE 1:24000BUTLER AND BURBANK, 1929; CORNWALL AND WRIGHT, 1954