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Northwest Africa 13787 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13787 This is an OFFICIAL meteorite name. Abbreviation: NWA 13787 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 554 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 13 Mar 2021 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 110:
Northwest Africa 13787 (NWA 13787) (Northwest Africa) Purchased: 2021 Classification: HED achondrite (Eucrite) History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in early 2021. Physical characteristics: Grayish to slightly brownish rock with some patches of fusion crust. Petrography: The meteorite is an unbrecciated coarse-grained eucrite predominantly composed of exsolved pyroxene and often lath-shaped calcic plagioclase with grain sizes of up to 1 mm. Minor phases include silica, chromite, FeS, ilmenite, and zircon. No metallic Fe has been found. Some cracks are filled by secondary calcite. Geochemistry: low-Ca pyroxene: Fs57.1±0.3Wo5.4±1.0 (Fs56.5-57.3Wo3.4-6.2, FeO/MnO=29-32, n=5); Ca-pyroxene: Fs26.7±0.3Wo43.2±0.2 (Fs26.4-27.1Wo42.9-43.4, FeO/MnO=29-31, n=5); calcic plagioclase: An90.3±2.3 (An85.8-93.2, n=6) Classification: Eucrite | ||||||||||||||||||||||||||||
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 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names) |