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Northwest Africa 13452 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13452 This is an OFFICIAL meteorite name. Abbreviation: NWA 13452 Observed fall: No Year found: 2019 Country: (Northwest Africa) Mass: 440 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 3 approved meteorites classified as R4-6. [show all] Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 1 Nov 2020 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13452 (NWA 13452) (Northwest Africa) Purchased: 2019 Classification: Rumuruti chondrite (R4-6) History: A batch of 26 identical-appearing stones was purchased by Nicholas Gessler in 2019 from a Moroccan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Fresh specimen composed predominantly of separated, well-formed equilibrated chondrules plus sparse Type 6 lithic clasts set in a fine grained matrix (~40%, black in thin section) containing Ti chromite and pentlandite. A few chondrules in the studied thin section contain olivine with more magnesian cores and more ferroan rims. Metal is absent. Geochemistry: Olivine in chondrules (Fa39.0-39.4, range Fa39.3±0.2, N = 3), olivine core in chondrule (Fa12.9), olivine rim in chondrule (Fa42.9), olivine in Type 6 clast (Fa39.3), low-Ca pyroxene (Fs30.8±0.3Wo1.4±0.3, rangeFs30.5-31.0Wo1.2-1.7, N = 3), augite (Fs11.5±0.1Wo45.7±0.1, range Fs11.4-11.5Wo45.6-45.7, N = 2), plagioclase (An81.2An12.3Or6.4). Classification: R4-6 chondrite breccia. Specimens: 21.8 g plus one polished thin section at UWB; remainder with Mr. N. Gessler. | ||||||||||||||||||||||||||||||
Data from: MB109 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) Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016) |
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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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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