Commodities
PrimaryCopper
Commodity typeM
Deposit
Deposit typeLode
Model96: Native Cu
Deposit sizeS
Orebody formTABULAR
Ore controlAmygdaloidal flow top
Materials
Ore mineralsCopper
GangueFeldspar, Epidote, Quartz, Calcite
Geology
Host rockBasalt · Portage Lake Volcanics
Economic & production
Development statusPast Producer
Production years1872, 1877-78, 1920-1925 AND LATER.
First production1872
Last production1925
Identification
Deposit ID10082875
MRDS IDW062240
RegionNA
Data scoreB
Coordinates47.30972, -88.35254
References
BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF PAPER NO. 144, 238 PP.DAVIDSON, E.S,, ESPENSHADE, G.H., WHITE, W.S., AND WRIGHT, J.C., 1955, BEDROCK GEOLOGY OF THE MOHAWK QUADRANGLE, MICHIGAN: U.S. GEOLOGICAL SURVEY, GEOLOGIC QUADRANGLE MAPS OF THE UNITED STATES, GQ 54, 1:24,000.BUTLER, B.S., AND BURBANK, W.S., 1929, P. 95.