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Northwest Africa 12519 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12519 This is an OFFICIAL meteorite name. Abbreviation: NWA 12519 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 44 approved meteorites classified as Diogenite-pm. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 12 Mar 2019 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 108:
Northwest Africa 12519 (NWA 12519) (Northwest Africa) Purchased: 2017 Feb Classification: HED achondrite (Diogenite, polymict) History: Purchased by John Higgins in February 2017 from a dealer in Laayoune, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed predominantly of angular mineral clasts derived from several diogenitic lithologies plus ~5 vol.% eucrite clasts in a finer grained matrix of related debris. Minerals are orthopyroxene (of at least two different compositions), olivine, anorthite, chromite, troilite, exsolved pigeonite, bytownitic plagioclase and silica polymorph. Geochemistry: Diogenitic orthopyroxene (Fs20.9Wo1.8; Fs28.8Wo3.3; FeO/MnO = 25-29; N = 2), olivine (Fa45.7-53.5, FeO/MnO = 55-57, N = 2), anorthite (An93.7Or0.2), orthopyroxene host (Fs45.7-48.5Wo2.9-2.7; Fs63.3Wo4.8; FeO/MnO = 29-31; N = 3), clinopyroxene exsolution lamellae (Fs20.0-20.4Wo42.7-43.3, FeO/MnO = 25-28, N = 2), plagioclase (An85.1Or0.9). Classification: Diogenite (polymict breccia). Specimens: 12.6 g including one polished thin section at UWB; remainder with Mr. J. Higgins. | ||||||||||||||||||||||||||||||
Data from: MB108 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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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography: |
Statistics: This is 1 of 7547 approved meteorites from (Northwest Africa) (plus 1970 unapproved names) |