Commodities
PrimaryCopper, Zinc
SecondaryLead
TertiaryGold, Silver
Commodity typeM
Deposit
Model186: Massive sulfide, kuroko (Phanerozoic)
Deposit sizeN
Orebody formLINEAR
Materials
Ore mineralsPyrite, Sphalerite, Chalcopyrite, Galena, Silver, Gold
GangueQuartz, Chlorite, Sericite, Dolomite
Geology
Host rockMeta-Argillite · Crandon Unit
Associated rockDacite
StructureFelsic Center Developed In Back-Arc Basin Facies Rocks
Tectonic settingPrecambrian Shield; Within Pembine-Wausau Subterrane Of The Wisconsin Magmatic Terranes
AlterationIntense Hydrothermal Alteration Is Present Stratigraphically Below The Massive Sulfides And Consists Of Silicification, Sericitization, Pyritization, And Minor Chloritization.
Economic & production
Development statusProspect
Discovery year1975
Identification
Deposit ID10097436
MRDS IDW019008
RegionNA
Data scoreB
Coordinates45.48083, -88.91972
References
Schulz, K.J., Nicholson, S.W., and Van Schmus, W.R., 2008, Penokean massive\nsulfide deposits: age, geochemistry, and paleotectonic setting [abstract]:\nInstitute on Lake Superior Geology, Proceedings volume 55, Part 1: Program\nand Abstracts, p. 76-77.\nSTAFF, 1977, NORTHERN MINER 1 - 6 - 77 P. 1, 6Dematties, T.A., 1994, Early Proterozoic Volcanogenic Massive Sulfide Deposits in Wisconsin: An Overview: Economic Geology, V.89\nhttp://econgeol.geoscienceworld.org/cgi/reprint/89/5/1122.pdfCRAWFORD, M.J., 1996, WISCONSIN EXPLORATION UPDATE: SKILLINGSMINING REVIEW, V. 85, NO. 21, P.4-5.Wisconsin Department of Natural Resources, 2009, Proposed Crandon Mine Information. http://www.dnr.state.wi.us/org/es/science/crandon/, Last updated 5/15/2009. Acquired 7/21/2010.Wisconsin Department of Natural Resources, 2008, Geologic History of the Crandon Area, http://dnr.wi.gov/org/es/science/crandon/geology.htm, last updated 10/17-2008, acquired 7/21/2010