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Northwest Africa 12246 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12246 This is an OFFICIAL meteorite name. Abbreviation: NWA 12246 Observed fall: No Year found: 2018 Country: Morocco Mass: 101.4 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 135 approved meteorites classified as Eucrite-unbr. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 11 Dec 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 12246 (NWA 12246) Morocco Purchased: 2018 May Classification: HED achondrite (Eucrite, unbrecciated) History: Found near Bir Tighisit, southern Morocco and purchased by Darryl Pitt in May 2018 from a Mauritanian dealer. Petrography: (A. Irving and S. Kuehner, UWS) Fresh gabbroic eucrite composed mostly of zoned low-Ca and high-Ca pyroxene (grainsize up to 1.5 mm) and anorthite (as interstitial stubby laths) with accessory silica polymorph, fayalite, ilmenite, chromite and troilite. Geochemistry: Low-Ca pyroxene cores (Fs30.2-30.7Wo5.8-6.1, FeO/MnO = 26-27, N = 2), orthopyroxene rims (Fs57.2-62.8Wo3.9-2.1, FeO/MnO = 33-34, N = 2), subcalcic augite (Fs39.2Wo30.3; Fs45.7Wo23.4; FeO/MnO = 31, N = 2), fayalite (Fa80.5-82.6, FeO/MnO = 39-41), anorthite (An91.4-92.1Or0.6-0.8, N = 2). Classification: Eucrite (unbrecciated, gabbroic). Specimens: 21.1 g including one polished thin section at UWB; remainder with DPitt. | ||||||||||||||||||||||||||||||
Data from: MB107 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 2049 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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