Fukang (meteorite)

Meteorite
Name= Fukang


Image_caption=
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Type= Stony-iron
Class= Pallasite
Group= Main Group Pallasite (MGP)
Structural_classification=
Composition= Fe 89.9 wt%, Ni 9.0 wt%, P 0.62 wt%, Co 0.51 wt%; Ge 41 µg/g, As 26 µg/g, Ga 19.1 µg/g, Pd 5.1 µg/g, Au 2.6 µg/g; Ir 43 ng/g.
Shock=
Weathering=
Country= China
Region= Fukang, Xinjiang Province
Lat_Long= coord|44|26|N|87|38|E|display=inline,title
Observed_fall= No
Fall_date=
Found_date= 2000
TKW= 1003 kg


Image2_caption= The Fukang meteorite was found in the mountains near Fukang, China in 2000. Pallasites are a type of stony-iron meteorite with beautiful olivine crystals.

History

In 2000 near Fukang (China), an anonymous finder recovered a 1003 kg mass. He removed from the main mass about 20 kg and in February 2005 the meteorite was taken at the Tucson Gem and Mineral Show. There it was seen by D.S. Lauretta of University of Arizona. Afterwards and the mass investigated by D.S. Lauretta, D. Hill, M. Killgore, D. Della-Giustina and Y. Goreva at Southwest Meteorite Center, Lunar and Planetary Laboratory, University of Arizona in Tucson [http://tin.er.usgs.gov/meteor/metbull.php?sea=Fukang&sfor=names&ants=&falls=&stype=contains&lrec=50&
] ] .

Classification and Composition

The Fukang pallasite contains large, gem quality olivine, or peridot, in a nickel-iron matrix. Olivines vary in shape from rounded to angular, many are fractured and they range in size from <5 mm to several cm.The main mass contains several regions of "massive" olivine clusters up to 11 cm in diameter with thin metal veins. Fo_86.4 with molar Fe/Mg = 0.1367, Fe/Mn = 40.37, and Ni = 0.03 wt%. The metal matrix is mostly kamacite with an average Nickel contents of 6.98 wt%. Vermicular sulfide (troilite) is present in some olivine. Oxygen isotopes: δ^18O 2.569 ‰, δ^17O 1.179 ‰, ∆1 7O = −0.157 ‰ [Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)] .

pecimens

A total of 31 kg of type specimen is on deposit at University of Arizona. M. Killgore holds a total of 31 kg. An anonymous collector holds the main mass.

Notes and References

External links

* http://www.lpi.usra.edu/meetings/lpsc2006/pdf/2250.pdf petrological, mineralogical and geochemical specifics - Lunar and Planetary Institute, 2007