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| Northwest Africa 13869 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 13869 This is an OFFICIAL meteorite name. Abbreviation: NWA 13869 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass:  667 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 570 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||||||
| Comments: | Approved 28 Mar 2021 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Northwest Africa 13869 (NWA 13869) (Northwest Africa) Purchased: 2021 Mar Classification: Ureilite History: The meteorite was purchased from a dealer in Morocco. Physical characteristics: Dark brownish rock without fusion crust. Petrography: The meteorite shows a cumulate texture of olivine and pigeonite grains up to 2 mm in sizes. Olivine displays characteristic reduced rims in contact with FeNi-metal or graphite. The meteorite contains flaky graphite and calcite-filled cracks. Geochemistry: reduced rims in olivine: Fa2.9-4.6; olivine contains 0.57±0.03 wt% Cr2O3 and 0.31±0.01 wt% CaO; pigeonite contains 1.39±0.06 wt% Cr2O3 and 1.72±0.08 wt% Al2O3 | ||||||||||||||||||||||||||||||
| 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) | ||||||||||||||||||||||||||||||