Commodities
PrimaryCopper
SecondarySilver
Commodity typeM
Materials
Ore mineralsCopper, Silver
GangueQuartz, Epidote, Microcline, Adularia, Prehnite, Datolite, Hematite, Analcime, Pumpellyite-(Mg), Chlorite
Geology
Host rockBasalt · Portage Lake Volcanics
StructureSyncline, Mass anticline
AlterationSilicification, pumpellitization
Economic & production
Development statusPast Producer
Discovery year1848
Identification
Deposit ID10310196
MRDS IDLW00196
Alternate namesEvergreen Lodes
RegionNA
Data scoreC
Coordinates47.3675, -88.07447
References
BUTLER, R.S. AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 144, 238 P.WILSON, M.L. AND DYL, S.J., III, 1992, THE MICHIGAN COPPER COUNTRY: MINERALOGICAL RECORD, V. 23, P. 1-76.BUTLER AND BURBANK, 1929.