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Northwest Africa 13773 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13773 This is an OFFICIAL meteorite name. Abbreviation: NWA 13773 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 455 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 28 Mar 2021 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 110:
Northwest Africa 13773 (NWA 13773) (Northwest Africa) Purchased: 2021 Classification: HED achondrite (Diogenite) History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in early 2021. Physical characteristics: Ten light-grayish fragments some of which partly covered with shiny fusion crust. Exposes up to 1 cm sized orthopyroxene crystals at broken surfaces. Petrography: The meteorite is a monomict breccia predominantly composed of blocky typically 100 to 700 µm sized orthoproxene grains and related more fine-grained cataclastic regions. Rarely unusual large pyroxene crystals up to 1 cm in size occurr. Minor phases include chromite, FeS, and some metallic iron. No plagioclase has been found in the section studied. Geochemistry: low-Ca pyroxene: Fs21.3±0.6Wo1.3±0.1 (Fs20.4-22.2Wo1.2-1.5, n=11, FeO/MnO=25-29) Classification: Diogenite | ||||||||||||||||||||||||||||
Data from: MB110 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. 110, in preparation (2021)
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Geography: |
Statistics: This is 1 of 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names) |