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Northwest Africa 11421 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11421 This is an OFFICIAL meteorite name. Abbreviation: NWA 11421 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 102 approved meteorites classified as Lunar. [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 23 Sep 2017 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 106:
Northwest Africa 11421 (NWA 11421) (Northwest Africa) Purchased: 2017 Classification: Lunar meteorite History: The meteorite was bought in 2017 from a meteorite dealer in Erfoud, Morocco. Physical characteristics: Many small grayish individuals lacking any fusion crust. White to beige clasts in greyish matrix are visible at the surface. Petrography: The meteorite is a breccia composed of angular to subrounded whitish clasts up to 1 cm in size set into a greyish vitreous groundmass. Mineral fragments are also present in the matrix. Dominant mineral phases are low-Ca pyroxene, Ca- pyroxene, olivine and calcic plagioclase. Minor phases include chromite, ilmenite, fayalite, pyrrhotite, FeNi metal, and barite. Contains some melt regions displaying quenching textures of dendritic pyroxene and plagioclase. Geochemistry: olivine: Fa30.1±10.4 (Fa18.4-52, n=16, FeO/MnO=79-112); low-Ca pyroxene: Fs33.3±2,8Wo2.5±1.0 (Fs30.4-36.4Wo1.4-3.8, n=10, FeO/MnO=55-64); Ca-pyroxene: Fs16.1±4.0Wo40.0±4.2 (Fs8.9-23.2Wo31.3-45.1, n=14, FeO/MnO=36-64); calcic plagioclase: An96.4±0.8 (An95.4-98.0, n=16) Classification: Lunar (feldspathic breccia) | ||||||||||||||||||||||||||||||
Data from: MB106 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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Photos: |
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Geography: |
Statistics: This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |