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| Northwest Africa 14473 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 14473 This is an OFFICIAL meteorite name. Abbreviation: NWA 14473 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass:  27 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 626 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 15 Dec 2021 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Northwest Africa 14473 (NWA 14473) (Northwest Africa) Purchased: 2021 Aug Classification: Carbonaceous chondrite (CM2) History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in August, 2021. Physical characteristics: Black fragment almost completely covered with fusion crust. Petrography: Brecciated carbonaceous chondrite composed of small (apparent mean diameter about 300 μm) chondrules, chondrule pseudomorphs, mineral fragments, and rare CAIs, some of which surrounded by fine-grained dust rims set into abundant fine-grained matrix. The Fe-rich matrix contains abundant sulfides and Ca-carbonates; some chondrule pseudomorphs contain fibrous phyllosilicates. Geochemistry: Matrix analyses yield FeO=32.4±1.9 wt% and an average total of 76.7±1.7 wt% (5 µm defocused beam, N=7), the latter indicating the presence of hydrous minerals. Ca-carbonate contains 0.98 wt% FeO, N=2. | ||||||||||||||||||||||||||||||
| 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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| Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) | ||||||||||||||||||||||||||||||