Commodities
PrimaryCopper
Commodity typeM
Deposit
Model96: Native Cu
Deposit sizeM
Orebody formFISSURE
Ore controlLode
Materials
Ore mineralsCopper
GangueCalcite, Quartz, Prehnite, Epidote
Geology
Host rockBasalt · "Kearsarge Amygdaloid", "Portage Lake Volcanics"
Economic & production
Development statusPast Producer
Production yearsKEARSARGE AMYGDALOID 1904-22; MASS FISSURE 1909-22
First production1904
Last production1922
Identification
Deposit ID10082845
MRDS IDW062203
RegionNA
Data scoreB
Coordinates47.28944, -88.38449
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, MICHIGAN: U.S. GEOLOGICAL SURVEY, GEOLOGIC QUADRANGLE MAPS OF THE UNITED STATES, GQ 27, 1:24,000.BUTLER AND BURBANK, 1929, P. 76-77.