Commodities
PrimaryCopper
Commodity typeM
Deposit
Model96: Native Cu
Deposit sizeS
Orebody formFISSURE
Ore controlFissure
Materials
Ore mineralsCopper
GangueCalcite, Quartz, Prehnite, Epidote, Laumontite
Geology
Host rockBasalt · Portage Lake Volcanics
StructureMass fissure of the ahmeek mine was mined where it crossed the Kearsarge lo
AlterationChloritization
Economic & production
Development statusPast Producer
Production yearsSTILL ACTIVE IN 1925
First production1909
Last production1925
Identification
Deposit ID10082617
MRDS IDW060054
RegionNA
Data scoreB
Coordinates47.29306, -88.37644
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: USGS MAP GQ-27, SCALE 1:24000BUTLER AND BURBANK, 1929