![]() ![]() VERNON COUNTY: The “Claywater Meteorite” was observed to fall at 9 A.M. Chemical analysis gave 89.78% iron and 7.6% nickel with trace amounts of cobalt, phosphorous, silicon, carbon, copper and tin (Fisher, 1887). Troilite was present in nodules and as fracture fillings. CROIX COUNTY: An iron meteorite massing 24,000 grams (52.91 pounds) was recovered from a plowed field (N1/2 SW Sec. SHAWANO COUNTY: A 33-pound iron meteorite was found in 1916 during plowing on a farm approximately 3 miles north of Angelica (Read, 1962a). The Belmont meteorite is currently in the Geology Museum at UW Madison. It contained mostly bronzite and olivine, but also contained about 23% Fe-Ni alloys (Broughton and LaPaz, 1962). LAFAYETTE COUNTY: A stony meteorite weighing 58.28 pounds was found in 1958 near Belmont. This meteorite is now in the Geology Museum at UW Madison. It was described as an “octahedral siderite rich in kamacite and taenite and relatively poor in plessite” with internal schreibersite bands, Widmannstatten figures, Neumann lines and Reichenbach’s lamellae (Hobbs, 1903). KEWAUNEE COUNTY: A meteorite massing nearly 4 kg was found during plowing on a farm about 4 miles west of Algoma. For a catalog of fragments found, visit the UW–Madison’s Department of Geoscience page on the Mifflin Meteorite ( ). UW–Madison is the designated repository for reference materials of this meteorite (2011, Meteoritical Bulletin database, Meteoritical Society Kita and others, 2013). The meteorite is classified as a L5 chondrite, and has a beautiful internally brecciated texture. Over 3.5 kg of fragments have been found so far in a meteorite-strewn field centered at Mifflin, but extending from Livingston to Mineral Point. IOWA COUNTY: The Mifflin Meteor made a spectacular fireball over parts of Wisconsin, Iowa, and Illinois as it fell on April 14, 2010. Specimens and a replica of this meteorite are in the Geology Museum at UW Madison. Samples of the Colby meteorite are in the Geology Museum at UW Madison.ĬOLUMBIA COUNTY: A 772-gram stony meteorite fell through a barn roof near Kilbourn at 5:00 P.M. (Image courtesy John Valley unauthorized reproduction is prohibited.)ĬLARK COUNTY: Two stony meteorites with a combined weight of over 200 pounds fell at 6:15 P.M. Meteorites Distinguished Wisconsin naturalist Increase Lapham examines a Wisconsin meteorite.ĭescription: Mifflin L5 chondrite meteorite fragment showing internal brecciation. ![]()
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