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Country: USA
State/District: Iowa, Emmet Co.
Co-ordinates: 43°25'N 94°50'W
Date of fall: 1879, May 10 1700
Total known weight: 320 kg (approx.)
Number of pieces: many pieces (shower)
Type: Stony-iron. Mesosiderite , subgroup A3/4
Shock Stage: S1
Mineral analyses:
Olivine Fa13-33
Pairings: not known
Synonyms: Emmet County, Iowa, Jowa, Peery Meteor, Perry Meteor
Metbase description: Show/Hide
Several large masses, totalling in weight over 700lb, the two largest weighing about 437lb and 151lb respectively, and hundreds of small metallic fragments, fell after detonations and the appearance of a brilliant fireball, S.F.Peckham, Am. J. Sci., 1879, 18, p.77, C.U.Shepard, Am. J. Sci., 1879, 18, p.186. Description and analysis, J.L.Smith, Am. J. Sci., 1880, 19, p.459. Mentioned, G.P.Merrill, Proc. U.S. Nat. Mus., 1920, 58, p.363. Popular account of the fall, B.H.Wilson, The Palimpsest, Iowa, 1928, 9, p.317 (M.A.4-117), G.S.Dillé, Proc. Iowa Acad. Sci., 1928, 35, p.225 (M.A.5-157), M.H.Hey, Cat. Met., 1966, p.157. Texture, metallography and silicate mineralogy, B.N.Powell, GCA, 1969, 33, p.789, B.N.Powell, GCA, 1971, 35, p.5. Analysis of whitlockite, L.H.Fuchs, Meteorite Research, ed. P.M.Millman, D.Reidel, Dordrecht-Holland, 1969, p.683. Bulk composition of silicates, J.Nelen and B.Mason, Smithson. Contrib. Earth Sci., 1972, (9), p.55. Study of taenite, E.R.D.Scott, GCA, 1973, 37, p.2283. Analysis of metal, 9.0% Ni, 9.0 ppm Ga, 52.3 ppm Ge, 2.7 ppm Ir, J.T.Wasson et al., GCA, 1974, 38, p.135. Nitrogen content, B.K.Kothari and P.S.Goel, GCA, 1974, 38, p.1493. Oxygen isotopic composition of mineral fractions, R.N.Clayton et al., Earth Planet. Sci. Lett., 1976, 30, p.10. The location of the 150lb mass is unknown. A 125lb mass, labelled "Estherville", formerly in the Univ. of Minnesota, is now in Washington (U.S. Nat. Mus.); cutting showed it to be "clearly a Canyon Diablo-type meteorite"; the 437lb mass was divided between the London, Paris and Vienna museums, A.L.Graham et al., Cat. Met., 1985, p.138. Rb-Sr data, V.R.Murthy et al., Meteoritics, 1977, 12, p.323 (abs.). Fission track records in silicates, P.F.Green et al., GCA, 1978, 42, p.1359. Cu content of perryite, R.S.Clarke,Jr. and E.Jarosewich, Meteoritics, 1978, 13, p.418 (abs.). Major, minor and trace element data of nonmagnetic fraction, D.W.Mittlefehldt et al., GCA, 1979, 43, p.673. Composition and structure of olivines and olivine coronas, C.E.Nehru et al., GCA, 1980, 44, p.1103. Calculation of atmospheric ablation based on cosmic ray tracks and Ne isotopes, N.Bhandari et al., Nucl. Tracks, 1980, 4, p.213. Oxygen fugacity estimations, W.N.Agosto, LPSC, 1981, 12, p.3 (abs.). Fission track study, uranium content of merrillite, G.Crozaz and D.R.Tasker, GCA, 1981, 45, p.2037; G.Crozaz et al., GCA, 1982, 46, p.749. Subgroup classification, R.H.Hewins, J. Geophys. Res., 1984, 89 (suppl.), p.C289. Oxygen fugacity data of pyroxene, R.H.Hewins and G.C.Ulmer, GCA, 1984, 48, p.1555; see also, LPSC, 1983, 14, p.311 (abs.). Ni content and structure of metallic phases, K.B.Reuter et al., GCA, 1988, 52, p.617. U-Th-Pb systematics, M.Brouxel and M.Tatsumoto, Proc. LPSC, 1990, 20, p.309. Ar-Ar age 3.68 Ga, D.D.Bogard et al., GCA, 1990, 54, p.2549. Composition of large metal nodules, J.Hassanzadeh et al., GCA, 1990, 54, p.3197. Mg isotopic composition of plagioclase, M.T.Bernius et al., LPSC, 1991, 22, p.93 (abs.). Study of magnetic properties, D.W.Collinson, Meteoritics, 1991, 26, p.1. TL data, D.W.G.Sears et al., GCA, 1991, 55, p.3167, J.D.Batchelor and D.W.G.Sears, GCA, 1991, 55, p.3831. U-Pb, Rb-Sr, and Sm-Nd isotopic study, M.Brouxel and M.Tatsumoto, GCA, 1991, 55, p.1121; see also, LPSC, 1990, 21, p.133 (abs.), LPSC, 1989, 20, p.117 (abs.). Ca-41 activity data, D.Fink et al., Earth Planet. Sci. Lett., 1991, 107, p.115. Re-Os isotopic composition of metal, T.Hirata and A.Masuda, Meteoritics, 1992, 27, p.569. Cosmogenic radionuclides data of metal and silicate, A.Albrecht et al., LPSC, 1992, 23, p.5 (abs.). Partitioning of REE between phosphates and silicates, A.K.Kennedy et al., LPSC, 1992, 23, p.681 (abs.). Determination of low-temperature cooling rates by X-ray diffraction, J.Ganguly et al, LPSC, 1993, 24, p.519 (abs.); see also, LPSC, 1991, 22, p.425 (abs.). Nitrogen isotopic composition of metal, C.A.Prombo and R.N.Clayton, GCA, 1993, 57, p.3749. Calculation of cooling rates from compositional zoning and Fe-Mg ordering in orthopyroxenes, J.Ganguly et al., GCA, 1994, 58, p.2711. Re-Os data on metal, J.J.Shen et al., MAPS, 1996, 31, p.A128 (abs.); see also, LPSC, 1997, 28, p.1297 (abs.). Thermal and shock history, shock stage S1, H.Haack et al., GCA, 1996, 60, p.2609. Cooling rate determination based on size of island region in cloudy zone of taenite, C.-W.Yang et al., MAPS, 1997, 32, p.423. Study of metal phase microstructure formed at low temperatures, C.-W.Yang et al., GCA, 1997, 61, p.2943. Re-Os data on metal, J.J.Shen et al., GCA, 1998, 62, p.2715. Chlorine abundance, D.H.Garrison et al., MAPS, 2000, 35, p.419. Cosmogenic radionuclide and light noble gas abundances in silicate and metal phase, A.Albrecht et al., MAPS, 2000, 35, p.975. Calculation of cooling rate, W.D.Hopfe and J.I.Goldstein, MAPS, 2001, 36, p.135. Mössbauer spectroscopy of Fe-Ni metal, R.B.Scorzelli and I.Souza-Azevedo, MAPS, 2001, 36, p.A185 (abs). Density and porosity, S.L.Wilkinson et al., MAPS, 2003, 38, p.1533. Fe isotopic composition, E.Mullane et al., MAPS, 2004, 39, No. 8 (Suppl.), p.A74 (abs.).
The meteorite data was copied from MetBase 7.1 for Windows.
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