Qidong (meteorite) explained

Qidong
Type:	Chondrite
Class:	Ordinary chondrite
Group:	L/LL5-an
Composition:	Fa25.7,^[1] Fe21.5, Fe-Ni metal abundance 4.7 wt%
Country:	China
Region:	Jiangsu province, Qidong County
Lat Long:	32.0833°N 151°W
Observed Fall:	Yes
Fall Date:	July 2, 1982, 17:45 hrs.
Tkw:	1275 g

Qidong is a L/LL5-an chondrite meteorite fallen in 1982 in China. After detonation a single individual specimen was found in the field. Other circumstances of fall and recovery were not reported.

Composition and classification

This meteorite is intermediate between L and LL ordinary chondrites, possibly indicating formation on a separate parent body.^[2] Its fayalite, ferrosilite place this stone at the extreme higher end of L chondrites, the metal content is typical of LL chondrites and the Co abundance in matrix kamacite (15 mg/g) is at the extreme lower end of LL chondrites.

See also

• Glossary of meteoritics
• Meteorite

External links

• Meteorite Studies, a photographic classification: Qidong

Notes and References

1. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1987Metic..22..157G&db_key=AST&page_ind=3&plate_select=NO&data_type=GIF&type=SCREEN_GIF&classic=YES A. L. Graham. Meteoritical Bulletin, No. 65. Meteoritics, vol. 22, page 160
2. Kallemeyn G. W., Rubin A. E., Wang D., and Wasson J. T. Ordinary chondrites: Bulk compositions, classification, lithophile-element fractionations, and composition-petrographic type relationships. 1989, Geochim. Cosmochim. Acta, 53, 2747–2767.