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Northwest Africa 13548 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13548 This is an OFFICIAL meteorite name. Abbreviation: NWA 13548 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 700 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 106 approved meteorites classified as Eucrite-melt breccia. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 12 Dec 2020 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13548 (NWA 13548) (Northwest Africa) Purchased: 2020 Classification: HED achondrite (Eucrite, melt breccia) History: The meteorite was purchased from a dealer in Algeria. Physical characteristics: Dark greyish fragment with some fusion crust. Petrography: The meteorite displays a dark-grayish interior and is a melt breccia composed of up to 1.0 cm sized basaltic clasts and up to 0.5 mm sized mineral clasts set into black melt rock matrix. Predominant minerals are exsolved pyroxenes and often lath shaped calcic plagioclase. The fine-grained and mostly recrystallized shock melt shows flow structures. Mineral grains in contact with the melt are partly resorbed. Minor phases include silica, chromite, ilmenite, FeS, Zircon and metallic iron. Geochemistry: low-Ca pyroxene: Fs60.8±0.8Wo2.6±0.3 (Fs58.4-62.0Wo2.2-3.4, n=15, FeO/MnO=27-30); Ca-pyroxene: Fs25.5±0.4Wo44.5±0.4 (Fs25.0-26.8Wo43.6-45.2, n=14, FeO/MnO=26-33); calcic plagioclase: An89.4±1.4 (An87.9-92.2, n=12) | ||||||||||||||||||||||||||||
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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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