Richardton meteorite

Richardton meteorite
Type	Chondrite
Class	Ordinary chondrite
Group	H5
Country	United States
Region	Richardton, North Dakota
Coordinates	46°37′30″N 102°16′17″W
Observed fall	Yes
Fall date	1918-06-30
TKW	90 kilograms (200 lb)
Strewn field	Yes
Related media on Wikimedia Commons

The Richardton meteorite is a 90 kilograms (200 lb) H5 Ordinary chondrite that was seen to fall at 21:48 on 30 June 1918 between Mott, North Dakota and Richardton, North Dakota, United States.^[1][2]

Pieces were found in a strewn field of about 9 miles (14 km) by 5 miles (8.0 km) centred on 46°37′30″N 102°16′17″W and oriented north–south.^[2] As of December 2012^[update] pieces of this meteorite were for sale online at up to US$80/g.^[3]

In 1960 John Reynolds discovered that the Richardton meteorite had an excess of ¹²⁹Xe, a result of the presence of ¹²⁹I in the solar nebula.^[4][5]

See also

• Glossary of meteoritics

References

1. "Richardton". Meteoritical Bulletin Database. Meteoritical Society. Retrieved 24 December 2012.
2. Quirke, T. T. (Sep–Oct 1919). "The Richardton Meteorite". The Journal of Geology. 27 (6). The University of Chicago Press: 431–448. Bibcode:1919JG.....27..431Q. doi:10.1086/622670. JSTOR 30057982.
3. "Richardton". Meteorites and Related Geology Specimens for Sale. New England Meteoritical Services. Retrieved 24 December 2012.
4. Reynolds, J. (31 March 1960). "Isotopic Composition of Primordial Xenon". Physical Review Letters. 4 (7): 351–354. Bibcode:1960PhRvL...4..351R. doi:10.1103/PhysRevLett.4.351.
5. "John Hamilton Reynolds, 77; Improved Study of Cosmic Ages". Retrieved 25 December 2012.

External links

• A combined chemical-petrological study of separated chondrules from the Richardton meteorite, N.M. Evensen et al., Lamont-Doherty Geological Observatory of Columbia University, Palisades, NY 10964 U.S.A., Earth and Planetary Science Letters doi:10.1016/0012-821X(79)90028-1