Commodities
PrimaryCopper, Silver
Commodity typeM
Deposit
Deposit typeLode
Model96: Native Cu
Deposit sizeM
Orebody formTABULAR
Ore controlLode
Materials
Ore mineralsCopper
GangueFeldspar, Epidote, Quartz, Calcite
Geology
Host rockBasalt · Pewabic Amygdaloid
StructureSyncline
Economic & production
Development statusPast Producer
Production years1856-1925 OR LATER
First production1856
Last production1925
Identification
Deposit ID10106402
MRDS IDW062239
Alternate namesOld Franklin Mine, Pewabic Lode, Quincy Pewabic Mine
RegionNA
Data scoreB
Coordinates47.14278, -88.56977
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 1:24000JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, HOUGHTON COUNTY, P. 200-218 MICHIGAN DEPARTMENT OF NATURAL RESOURCES.BUTLER, B.S., AND BURBANK, W.S., 1929, P. 94-95.