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Norfork meteorite, Baxter Co., Arkansas, USA

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Latitude & Longitude (WGS84): 36° 13' North , 92° 16' West
Latitude & Longitude (decimal): 36.21667,-92.26667
Non-native locality type:Meteorite
Meteorite Class:IIIAB iron meteorite
Meteoritical Society Class: Iron, IIIAB
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfa : Humid subtropical climate


Iron meteorite, octahedrite (IIIAB, Om)
Fell, October 1918; 1.050 kg

A mass of unknown weight was reported to have fallen, but only a single ~ 1 kg mass (~11 x 7 x 5 cm) was recovered from a 1.2 m wide hole. One side is described as fractured and hacky, the other side is marked with regmaglypts.The meteorite itself contains long Kamacite lamellae with Neumann bands accompanied by both taenite and plessite. Minor amounts of schreibersite, troilite, and daubréelite are also reported. A very large cosmic ray exposure (CRE) age of > 900 million years is reported for Norfork.

Norfork is one of the smaller of 11 witnessed IIIAB falls. About half the mass is with Arizona State University in Tempe.


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5 valid minerals.

Meteorite/Rock Types Recorded

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This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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Nininger, H. H. (1937) The Norfork, Arkansas, Meteorite, An Iron of Witnessed Fall. Popular Astronomy: 45: 562-567.
Fireman, E. L. & Schwarzer, D. (1957) Measurement of Li 6, He 3, and H 3 in meteorites and its relation to cosmic radiation : Geochimica et Cosmochimica Acta: 11(4): 252-262.
Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Grady, M. M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.

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