Deposit
Model96: Native Cu
Deposit sizeS
Orebody formFISSURE
Ore controlFissure
Materials
Ore mineralsCopper
GangueCalcite, Quartz, Datolite, Epidote, Pumpellyite-(Mg)
Geology
Host rockAndesite · "Portage Lake Volcanics", "Ashbed Amygdaloid"
Economic & production
Development statusPast Producer
Production years1861-70, 1872-77, 1881, 1882, 1884
First production1861
Last production1884
Identification
Deposit ID10106399
MRDS IDW062196
Alternate namesAshbed
RegionNA
Data scoreB
Coordinates47.42417, -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: U.S. GEOLOGICAL SURVEY, GEOLOGIC QUADRANGLE MAPS OF THE UNITED STATES, GQ 36, 1:24,000.BUTLER AND BURBANK, 1929, P. 78.