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Northwest Africa 12327 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12327 This is an OFFICIAL meteorite name. Abbreviation: NWA 12327 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 21.6 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 407 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 11 Dec 2018 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 12327 (NWA 12327) (Northwest Africa) Purchased: 2016 Classification: HED achondrite (Eucrite, polymict) History: The meteorite was purchased from a local meteorite dealer in Morocco. Physical characteristics: Two dark grayish individuals with fusion crust. Petrography: The meteorite is a coarse-grained basaltic breccia composed of up to 6 mm sized basaltic and up to 5 mm sized dark impact melt clasts set into a clastic matrix. Mineral phases are predominantly up to 1.5 mm sized exsolved pyroxene and lath shaped calcic plagioclase. Several low-Ca pyroxene grains are magmatically zoned indicating a low degree of thermal metamorphism. Minor phases include silica, chromite, and FeNi metal. Geochemistry: low-Ca pyroxene: Fs41.1±4.2Wo2.6±0.9 (Fs33.3-45.8Wo1.2-3.8, n=21, FeO/MnO=28-37); Ca-pyroxene: Fs21.0±0.3Wo41.9±0.6 (Fs20.4-21.7Wo40.8-42.5, n=15, FeO/MnO=23-27); calcic plagioclase: An91.0±1.6 (An88.5-93.2, 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 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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