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| Bou Kra 004 | |||||||||||||||||||||||||||||||||||
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| Basic information | Name: Bou Kra 004 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2010 Country: Western Sahara Mass:  273 g | ||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 251 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||||||
| Comments: | Approved 27 Apr 2013 | ||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 102:
Bou Kra 004 26.707°N, 12.759°W Saguia el Hamra, Western Sahara Found: 2010 Sep 25 Classification: HED achondrite (Eucrite, monomict) History: Found by Pjotr Muromov and Svend Buhl on September 25, 2010, on the G’idat Amwizirat plateau in Western Sahara (substrate is fine-grained limestone and chert desert pavement). Physical characteristics: Two fresh, larger fragments (130.4 g and 93.80 g) coated by black fusion crust (and in turn by clusters of the fruticose lichen Ramalina maciformis), plus many small fragments weighing 17.0 g (>5 mm) and 31.5 g (<5 mm) total. All fragments were found within a 3.5 m radius, and fit together to form a heart-shaped and completely fusion-crusted mass. Petrography: (A. Irving and S. Kuehner, UWS): Ophitic assemblage of exsolved pigeonite and calcic plagioclase with accessory silica polymorph, ilmenite, troilite, Ti-chromite and rare zircon. Pyroxenes contain dusty zones of microscopic troilite inclusions. Geochemistry: Low-Ca pyroxene Fs58.8Wo5.6 (FeO/MnO = 29.8-30.7), high-Ca pyroxene Fs28.3-28.5Wo42.0-41.9 (FeO/MnO = 33.1-33.9). Classification: Eucrite (unbrecciated, basaltic). Specimens: 20.3 g of type material and one polished thin section are on deposit at UWB. Some of the remaining material was donated to the University of Casablanca, and the rest is held by SBuhl. | ||||||||||||||||||||||||||||||||||
| Data from: MB102 Table 0 Line 0: |
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| Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) SBuhl: Meteorite Recon (Mr. S Buhl), Muehlendamm 86, 22087 Hamburg, Germany (private address; updated 14 May 2010) |
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| References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography:
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Statistics: This is 1 of 97 approved meteorites from Saguia el Hamra, Western Sahara This is 1 of 235 approved meteorites from Western Sahara (plus 19 unapproved names) | ||||||||||||||||||||||||||||||||||
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