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Northwest Africa 12293 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12293 This is an OFFICIAL meteorite name. Abbreviation: NWA 12293 Observed fall: No Year found: 2018 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 11 Dec 2018 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 107:
Northwest Africa 12293 (NWA 12293) (Northwest Africa) Purchased: 2018 Classification: HED achondrite (Eucrite) History: The meteorite was purchased from a local meteorite dealer in Layaoune, Morocco. Physical characteristics: Grayish individual with some fusion crust. Petrography: Unbrecciated coarse-grained basalt predominantly composed of exsolved pyroxene and often lath-shaped calcic plagioclase with average grains sizes of about 1 mm. Minor phases include silica, ilmenite, chromite, and barite. No metallic iron has been detected. The meteorite contains abundant shock melt veins and pockets. Geochemistry: low-Ca pyroxene: Fs60.3±0.7Wo2.1±0.2 (Fs59.1-61.3Wo1.7-2.6, n=14, FeO/MnO=29-33); Ca-pyroxene: Fs26.4±0.3Wo42.8±0.5 (Fs25.8-26.8Wo41.9-43.6, n=15, FeO/MnO=28-32); calcic plagioclase: An90.5±0.4 (An89.8-91.4, n=15) | ||||||||||||||||||||||||||||
Data from: MB107 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. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |