Richardton meteorite explained

Richardton meteorite
Type:	Chondrite
Class:	Ordinary chondrite
Group:	H5
Country:	United States
Region:	Richardton, North Dakota
Lat Long:	46.625°N -102.2714°W
Observed Fall:	Yes
Fall Date:	1918-06-30
Strewn Field:	Yes

The Richardton meteorite is a 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 by centred on 46.625°N -102.2714°W and oriented north–south. pieces of this meteorite were for sale online at up to /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

Notes and References

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