Qidong (meteorite)

Meteorite
Name= Qidong


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Type= Chondrite
Class= Ordinary chondrite
Group= L/LL5-an
Structural_classification=
Composition= Fa_25.7 [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] ] , Fe_21.5, Fe-Ni metal abundance 4.7 wt%
Shock=
Weathering=
Country= China
Region= Jiangsu province, Qidong County
Lat_Long= coord|32|5|N|121|30|E|display=inline,title [ [http://tin.er.usgs.gov/meteor/metbull.php?sea=Qidong&sfor=names&ants=&falls=&stype=contains&lrec=50&
] ]
Observed_fall= Yes
Fall_date= July 2, 1982, 17:45 hrs.
Found_date=
TKW= 1275 g


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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 [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.] . Its fayalite, ferrosilite place this stone at the extreme higher end of L chondrites, the metal contents contents is typical of LL chondrites and the Co abundance in matrix kamacite (15 mg/g) is at the extreme lower end of LL chondrites.

Notes

See also

* Meteorite

External links

* [http://www.meteoritestudies.com/protected_QIDONG.HTM Meteorite Studies, a photographic classification: Qidong]