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Northwest Africa 13545 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13545 This is an OFFICIAL meteorite name. Abbreviation: NWA 13545 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 12 Dec 2020 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 109:
Northwest Africa 13545 (NWA 13545) (Northwest Africa) Purchased: 2020 Classification: HED achondrite (Eucrite) History: The meteorite was purchased from a dealer in Algeria. Physical characteristics: Light brownish fragment with some fusion crust. Petrography: The meteorite is an unbrecciated medium-grained basalt predominantly composed of exsolved pyroxene (average grain sizes of about 400 μm) and larger, often lath-shaped calcic plagioclase (average grain sizes of about 800 μm). Minor phases include silica, chromite, troilite ; no metallic iron has been detected. Geochemistry: low-Ca pyroxene: Fs58.4±0.5Wo6.1±0.6 (Fs57.7-59.3Wo5.3-7.0, n=16, FeO/MnO=27-30); Ca-pyroxene: Fs29.7±0.1Wo41.2±0.2 (Fs29.5-30.0Wo40.9-41.5, n=12, FeO/MnO=29-32); calcic plagioclase: An89.5±0.4 (An88.9-90.5, n=13) | ||||||||||||||||||||||||||||
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 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |