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Northwest Africa 12878 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12878 This is an OFFICIAL meteorite name. Abbreviation: NWA 12878 Observed fall: No Year found: 2019 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 6 Oct 2019 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 108:
Northwest Africa 12878 (NWA 12878) (Northwest Africa) Purchased: 2019 Classification: HED achondrite (Eucrite) History: The meteorite was purchased from a meteorite dealer in Errachidia, Morocco. Physical characteristics: Small dark greyish fragment with some fusion crust. Petrography: The meteorite is a polymict breccia with fine- and coarse-grained basaltic clasts set into a clastic matrix predominantly composed of exsolved pyroxene and calcic plagioclase of highly variable grain sizes. Minor phases include silica, chromite, FeS, ilmenite, zircon, and some kamacite. The meteorite contains shock melt veins. Geochemistry: low-Ca pyroxene: Fs61.8±0.4Wo2.2±0.5 (Fs60.8-62.2Wo1.8-3.4, FeO/MnO=32-37, n=12); Ca-pyroxene: Fs27.3±0.4Wo43.6±0.4 (Fs26.5-28.2Wo42.9-44.4, FeO/MnO=31-36, n=14); calcic plagioclase: An87.8±4.0 (An79.5-91.0, n=15) | ||||||||||||||||||||||||||||
Data from: MB108 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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |