42-10-020

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Specimen Number42-10-020Alternate Number61-3-4CommentsMultiple examples of mineralization including sphalerite breccia ore, fracture-fill chalcopyrite + galena, and very coarse-grained galena + sphalerite + pyrite.In Teaching CollectionNoMineral(s)sphaleritegalenachalcopyritepyriteRock NameCu-Pb-Zn oreDistrictUpper Mississippi ValleyMinePiquetteExternal LinkMindatDeposit TypeMVTGeo-Coords^[1]Donated ByUniversity of Wisconsin-Madison Department of GeoscienceReference MaterialACL-136: George, H.C., 1918, The Wisconsin Zinc District; Trans. Amer. Inst. Min. Eng. vol. LIX, New York, NY, 33 p.

ACL-135: Heyl, A.V., Broughton, W.A., and West, W.S., 1970, Guidebook to the upper Mississippi Valley Base-Metal District, WI Geol. Nat. Hist. Surv. Inform. Circ. no. 16, Madison, WI, 49 p.

ACL-151: Heyl, A.V., Lyons, E.J., Agnew, A.F., and Behre, C.H., 1955, Zinc-Lead-Copper Resources and General Geology of the Upper Mississippi Valley District; U.S. Geol. Surv. Bull. 1015-G, Washington, D.C., 18 p.

ACL-155: Heyl, A.V., and King, E.R., 1966, Aeromagnetic and Tectonic Analysis of the Upper Mississippi Valley Zinc-Lead District; U.S. Geol. Surv. Bull. 1242-A, Washington, D.C., 16 p.

ACL-179: De Geoffroy, J., 1969, Geochemical Prospecting by Spring Sampling in the Southwest Wisconsin Zinc Mining Area; Wisc. Geol. Nat. Hist. Surv. Info. Circ. No. 10, 28 p.

ACL-232: Brown, J.S., ed., 1967, Genesis of Stratiform Lead-Zinc-Barite-Fluorite Deposits; Econ. Geol. Mono. 3, Lancaster, Pennsylvania, 443 p.

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42-10-020