Commodities
PrimaryCopper
Commodity typeM
Deposit
Deposit typeLode
Model96: Native Cu
Deposit sizeS
Orebody formTABULAR
Materials
Ore mineralsCopper
GangueFeldspar, Epidote, Quartz, Calcite
Geology
Host rockBasalt · "Ashbed Amygdaloid", "Portage Lake Volcanics"
Economic & production
Development statusPast Producer
Production years1861-1886, 1911, 1913-18.
First production1861
Last production1918
Identification
Deposit ID10082866
MRDS IDW062229
Alternate namesSumner
RegionNA
Data scoreB
Coordinates47.12861, -88.59005
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., 1956, GEOLOGIC MAP OF THE HANCOCK QUADRANGLE, MICHIGAN: USGS MAP MF-46, SCALE 1:24000BUTLER, B.S., AND BURBANK, W.S., 1929, P. 86.