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Northwest Africa 13731 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13731 This is an OFFICIAL meteorite name. Abbreviation: NWA 13731 Observed fall: No Year found: 2019 Country: Morocco Mass: 2 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 709 approved meteorites (plus 2 unapproved names) classified as H3. [show all] Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 6 Feb 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13731 (NWA 13731) Morocco Purchased: 2019 Classification: Ordinary chondrite (H3) History: Purchased by Jesper Grønne in 2019 from a Moroccan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, relatively small glass-bearing chondrules (apparent diameter 320±200 µm, N=24) are set in a recrystallized matrix containing altered metal, troilite, chlorapatite, taenite and chromite. Geochemistry: Olivine (Fa18.6±2.5, range Fa13.9-22.1, Cr2O3 < 0.05 wt.%, N = 7), low-Ca pyroxene (Fs17.4±5.2Wo1.2±1.0, range Fs13.8-26.5Wo0.2-2.7, N = 5), subcalcic augite (Fs18.6±9.8Wo31.2±1.1, range Fs11.7-25.5Wo30.4-32.0, N = 2). Classification: Ordinary chondrite (H3). This specimen is unequilibrated but of high petrologic subtype. Specimens: 20.5 g including one polished thin section at UWB; remainder with Mr. J. Grønne. | ||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) |
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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 2068 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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