| 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 / 46.62500°N 102.27139°W / 46.62500; -102.27139 |
| 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 / 46.62500°N 102.27139°W / 46.62500; -102.27139 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]
![[icon]](https://akarinohon.com/text/taketori.cgi/en.wikipedia.org/wiki/File:Wiki_letter_w_cropped.svg){kind=small} |
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