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| Northwest Africa 12520 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 12520 This is an OFFICIAL meteorite name. Abbreviation: NWA 12520 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass:  16 kg | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 20 approved meteorites classified as LL6-melt breccia. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
| Comments: | Approved 1 Nov 2020 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 109:
Northwest Africa 12520 (NWA 12520) (Northwest Africa) Purchased: 2018 Nov Classification: Ordinary chondrite (LL6, melt breccia) History: Purchased by Aziz Habibi in November 2018 from a Mauritanian dealer. Petrography: (A. Irving and S. Kuehner, UWS) Relatively fresh, shock-modified breccia consisting of clasts of petrographic type 6 and shock stage S1 (largely recrystallized with rare chondrule remnants and stained metal) in a very fine grained to glassy matrix (black to cinnamon-brown in thin section). Geochemistry: Olivine (Fa30.8-31.2, N = 3), orthopyroxene (Fs25.1-25.5Wo2.2-1.6, N = 3), clinopyroxene (Fs10.5-10.6Wo42.9-42.7, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.95. Classification: Ordinary chondrite (LL6 melt breccia). Specimens: 83.5 g including one polished thin section at UWB; remainder with Mr. A. Habibi. | ||||||||||||||||||||||||||||||
| Data from: MB109 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) |
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| References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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| Photos: |
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| Geography: |
Statistics: This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) | ||||||||||||||||||||||||||||||