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Scottsville meteorite, Allen Co., Kentucky, USA

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IIAB Iron, hexahedrite [Ni 5.3%]
Found 1867, 10 kg

A wedge-shaped meteorite was found during tobacco hoeing near Scottsville in June 1867, but it was not described until 1887. Scottsville is a IIAB hexahedrite, an iron meteorite class accounting for ~10% of all iron meteorites. Neumann bands due to preterrestrial shock event(s) are abundant. The meteorite is quite corroded and has lost all remnants of a fusion crust [The shape suggests an original fusion cone]. In addition, parts of it have been artificially reheated and hammered. Troilite is present in conspicuous nodules, frequently surrounded by schreibersite. Very small daubréelite blebs — apparently due to shock melting of the troilite — are also found in the meteorite. Minor amounts of residual cohenite are found, but much of the cohenite has decomposed into graphite and ferrite.

During the period from 1839 until 1867, seven meteorites — all irons — were discovered in Kentucky as settlers cleared the land for homes and farming. Several of them — including Scottsville — have intriguing preterrestrial features, but Scottsville may tell us as much about intra-asteroidal impacts and terrestrial weathering as it tells us about the original asteroidal core where its initial geochemical characteristics were shaped.

Mineral List



7 entries listed. 6 valid minerals.

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References

Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 3 volumes, 1418 pages.
Kiesl, W., Weinke, H. H. & Wichtl, M. (1979) The Scottsville iron-meteorite. Meteoritics 14(4): 568 - 570. (Dec 1979)
Grady, M. M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, London, New York, Oakleigh, Madrid. 689 pages.

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