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Shişr 007 meteorite, Dhofar Governorate (Al Janubiyah Province), Oman

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Latitude & Longitude (WGS84): 18° 17' 34'' North , 53° 34' 0'' East
Latitude & Longitude (decimal): 18.29278,53.56694
Other regions containing this locality:Arabian Peninsula
Non-native locality type:Meteorite
Meteorite Class:Ureilite meteorite
Meteoritical Society Class: Ureilite
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:BWh : Hot deserts climate
Other/historical region names associated with this locality:Zufar


Ureilite (S3), 2001 find
9.024 kg in 14 pieces; largest stone, 4.258 kg

The Shisr 007 meteorite is one of several relatively large Ureilites found in various desserts over the past two decades. Indeed, Shisr 007 is the the 4th most massive ureilite now listed at the Meteoritical Society's Meteoritical Bulletin Database (May 2014). Ureilites are noted for their unusual combinations of mafic features, diamond polymorphs, and oxygen isotope disparities which defy easy explanation. Two large stones account for ~80% of Shisr 007's total mass. The published literature for this potentially important meteorite appears to be quite sparse. Like most ureilites, olivine and pyroxene (pigeonite) account for the bulk of the meteorite and C-rich interstitial material is also present. The mostly graphitized carbon is responsible for the reduced rims of both Olivine and Pyroxene crystals and has produced some very tiny Fe metal inclusions in the rim areas. Both graphite and diamond have been reported with hints of hexagonal lonsdaleite reported by Nagashima et al. (2012).

The olivine shows both undulatory extinction and planar deformation fractures indicating moderately strong shock level S3. The S3 classification is not at all unexpected as many ureilites have experienced strong shock levels. Indeed, these strong shock have apparently produced many of the ureilite diamonds.

Mineral List


4 valid minerals.

Meteorite/Rock Types Recorded

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References

Goodrich, C. A. (1992) Ureilites: A critical review. Meteoritics 27 (4): 327–352. (Sept. 1992).

Russell, S. S., Zipfel, J., Grossman, J .N. & Grady, M. M. (2002). The Meteoritical Bulletin, No. 86, 2002 July. Meteoritics & Planetary Science 37 (7S): A157-A184. (July 2002).

Ando, K., Nakamura, T., Okazaki, R., Nakashima, D., Kakazu, Y. & Kitajima, F. (2008). Mineralogy and Noble Gas Signatures of Desert Meteorite Shisr 007 (Ureilite), 5139.pdf. Meteoritics & Planetary Science 43 (Supplement): A17. (July 2008)

Nagashima, K., Nara, M. & Matsuda, J-i (2012). Raman spectroscopic study of diamond and graphite in ureilites and the origin of diamonds: Meteoritics & Planetary Science 47 (11): 1728–1737. (Nov. 2012)

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