Description
Central Wisconsin Joint Venture (Getty Mining Co And Ernst K. Lehmann And Assoc. Of Wisc)
Commodities
PrimaryCopper
SecondaryGold
TertiaryZinc
Commodity typeM
Deposit
Model184: Massive sulfide, kuroko
Deposit sizeU
Materials
Ore mineralsBornite, Chalcocite, Chalcopyrite, Electrum, Gold, Magnetite, Pyrite, Pyrrhotite, Tennantite, Tetrahedrite
Geology
Host rockRhyolite · Quartz-Sericite Schists
StructureSteeply Dipping Isoclinally Folded To Locally Gently Dipping Volcanic Sections., Main Zone Is At The Western Edge Of A Felsic Center Developed On The Flanks Of A Mafic Volcanic-Intrusive Complex
Tectonic settingBack-Arc Basin. Laberge Suggests That These Metasediments May Have Been Deposited In A Number Of Basins Formed By Fault Grabens During The Late Penokean Orogeny.
AlterationUpper Greenschist To Lower Amphibolite Facies. In The Main Zone There Is Partial Replacement Of Previously Deposited Exhalite.
Economic & production
Development statusProspect
Discovery year1979
Identification
Deposit ID10082577
MRDS IDW060003
RegionNA
Data scoreB
Coordinates45.48833, -90.05677
References
DEMATTIES, 1990, ECON. GEOL., V.85, P. 1908-1916LABERGE, G.L., ED., VOLCANOGENIC MASSIVE SULFIDE DEPOSITS OF NORTHERN WISCONSIN--A COMMEMORATIVE VOLUME: INSTITUTE ON LAKE SUPERIOR GEOLOGY, PROCEEDINGS, V. 42, PT. 2.LABERGE, 1996.