Shişr 007 meteorite, Dhofar Governorate, Omani

Regional Level Types
Shişr 007 meteorite	Meteorite Fall Location
Dhofar Governorate	Governorate
Oman	Country

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.

Other Regions, Features and Areas containing this locality

References