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Northwest Africa 14028 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14028 This is an OFFICIAL meteorite name. Abbreviation: NWA 14028 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 258 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 8 Jun 2021 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 110:
Northwest Africa 14028 (NWA 14028) (Northwest Africa) Purchased: 2020 Classification: HED achondrite (Eucrite, monomict) History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania in late 2020. Physical characteristics: Light-brownish rock partly covered with fusion crust. Petrography: The meteorite is a monomict basaltic breccia composed of coarse- and more fine-grained regions both dominated by exsolved pyroxene and often lath-shaped calcic plagioclase. Grain sizes are about 800 µm in the coarse-grained and about 250 µm in the fine-grained areas. Minor phases include silica, chromite, FeS, and ilmenite. No metallic iron has been detected. Geochemistry: low-Ca pyroxene: Fs56.1±0.3Wo2.1±0.4 (Fs55.3-56.6Wo1.8-3.2, FeO/MnO=31-32, n=10); Ca-pyroxene: Fs23.2±0.7Wo44.6±0.7 (Fs22.2-24.2Wo43.4-45.6, FeO/MnO=27-30, n=9); calcic plagioclase: An89.7±0.6 (An88.7-90.7, n=11) | ||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography: |
Statistics: This is 1 of 8394 approved meteorites from (Northwest Africa) (plus 1899 unapproved names) |