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Northwest Africa 13233 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13233 This is an OFFICIAL meteorite name. Abbreviation: NWA 13233 Observed fall: No Year found: 2019 Country: (Northwest Africa) Mass: 868 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 102 approved meteorites classified as Eucrite-melt breccia. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 10 Mar 2020 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13233 (NWA 13233) (Northwest Africa) Purchased: 2019 Classification: HED achondrite (Eucrite, melt breccia) History: The meteorite was reportedly found near Dakhla city and purchased by the main mass holder from a meteorite dealer in Morocco. Physical characteristics: Dark grayish rock without fusion crust. Petrography: The meteorite is a melt breccia predominantly composed of large up to 600 mm sized pyroxene grains set into a feldspar-dominated matrix. Pyroxenes are completely recrystallized and display mottled compositional zoning. Feldspar often show fibrous textures indicative for crystallization from a melt. No lithic clasts have been encountered. Minor phases include silica, chromite, and ilmenite. No metallic iron has been found. Geochemistry: pyroxene: Fs52.8±3.7Wo10.0±3.9 (Fs47.1-57.0Wo4.9-18.5, n=14, FeO/MnO=26-31); calcic plagioclase: An90.7±1.1 (An89.5-92.9, n=11) | ||||||||||||||||||||||||||||
Data from: MB109 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. 109, in preparation (2020)
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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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