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Northwest Africa 12283 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12283 This is an OFFICIAL meteorite name. Abbreviation: NWA 12283 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 145.5 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 595 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 12283 (NWA 12283) (Northwest Africa) Purchased: 2018 Classification: HED achondrite (Eucrite) History: The meteorite was purchased from a local meteorite dealer in Agadir, Morocco. Physical characteristics: Grayish fragments without fusion crust. Petrography: The meteorite is a brecciated medium-grained basalt predominantly composed of exsolved pyroxene and often lath-shaped calcic plagioclase with average grains sizes of about 500 μm. Minor phases include silica, ilmenite, chromite, and troilite. No metallic iron has been detected. Geochemistry: low-Ca pyroxene: Fs60.3±0.5Wo2.4±0.7 (Fs59.3-60.9Wo1.8-4.0, n=12, FeO/MnO=31-34); Ca-pyroxene: Fs26.7±0.4Wo43.4±0.7 (Fs25.7-27.4Wo41.7-44.0, n=12, FeO/MnO=29-33); calcic plagioclase: An89.9±2.1 (An86.4-92.5, n=12) | ||||||||||||||||||||||||||||
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 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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