Description
French Explorers
Commodities
PrimaryZinc
SecondaryLead, Cadmium
TertiaryCopper, Barium-Barite
Commodity typeB
Deposit
Deposit sizeM
Orebody formTABULAR, LINEAR
Ore controlReverse And Bedding Plane Faults, Joints Associated With Gentle Folds
Materials
Ore mineralsBarite, Chalcocite, Chalcopyrite, Galena, Marcasite, Sphalerite
GangueDolomite, Quartz
Geology
Host rockDolomite · Galena Formation Dolomite;Decorah Formation Dolomite, Limestone;Platteville Formation Limestone, Dolomite;Prarie Du Chien Group Dolomite
StructureWisconsin Arch To The East, Illinois Basin To The South, Forest City Basin To The West
Economic & production
Development statusProducer
First production1750
Discovery year1750
Identification
Deposit ID10073161
MRDS IDW019010
RegionNA
Data scoreB
Coordinates42.66668, -90.50011
References
HEYL, A. V., 1968, THE UPPER MISSISSIPPI VALLEY BASE - METAL DISTRICT; IN RIDGE, J. D. ED., ORE DEPOSITS OF THE U.S., 1933 - 1967, V. 1, P 431 - 459VARIOUS AUTHORS, 1961 - 1966, GEOLOGY OF PARTS OF THE UPPER MISSISSIPPI VALLEY ZINC - LEAD DIST.; U. S. GEOL. SURV. BULL. 1123 A - IWORLD MINING 6 - 25 - 76 P. 194. RAUSCH AND MARIACHER, 1970, AIME SYMP. PB - ZN V. 1 P. 910, 914. HEYL, A. V., 1968, U. MISS. VALLEY DIST.; IN ORE DEPOSITS OF U. S. 1933 - 1967, P. 434, 435ENGINEERING AND MINING JOURNAL 1 - 77 P. 143