Commodities
PrimaryCopper
SecondarySilver
Commodity typeM
Deposit
Deposit typeLode
Model96: Native Cu
Deposit sizeM
Orebody formTABULAR
Ore controlAmygdaloidal basalt flow top
Materials
Ore mineralsCopper
GangueFeldspar, Epidote, Quartz, Calcite
Geology
Host rockBasalt · "Kearsarge Amygdaloid", "Portage Lake Volcanics"
Economic & production
Development statusPast Producer
Production years1900-1901 PRODUCED MOHAWKITE; 1902-1925 AND LATER PRODUCED COPPER.
First production1900
Last production1931
Identification
Deposit ID10082872
MRDS IDW062236
RegionNA
Data scoreB
Coordinates47.305, -88.35866
References
BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF PAPER NO. 144, 238 PP.WHITE, W.S., CORNWALL, H.R., AND SWANSON, R.W., 1953, BEDROCK GEOLOGY OF THE AHMEEK QUADRANGLE; USGS MAP GQ-27, SCALE 1:24000DAVIDSON, E.S, ESPENSHADE, G.H., WHITE, W.S., AND WRIGHT, J.C., 1955, BEDROCK GEOLOGY OF THE MOHAWK QUADRANGLE, MICHIGAN: USGS MAP GQ-54, SCALE 1:24000.BUTLER, B.S., AND BURBANK, W.S., 1929, P. 90.