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Northwest Africa 13454 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13454 This is an OFFICIAL meteorite name. Abbreviation: NWA 13454 Observed fall: No Year found: 2019 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 39 approved meteorites classified as R3. [show all] Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 1 Nov 2020 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 109:
Northwest Africa 13454 (NWA 13454) (Northwest Africa) Purchased: 2019 Classification: Rumuruti chondrite (R3) History: Two identical stones (302 g, 208 g) were purchased by Nicholas Gessler in 2019 from a Moroccan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Separated, well-formed chondrules (some glass-bearing; apparent diameter 550 ± 380 µm, N = 22) plus sparse R3 lithic clasts and rare very small CAI are set in a fine grained matrix containing albitic plagioclase, pentlandite and rare sperrylite. Metal is absent. Geochemistry: Olivine (Fa33.8±15.1, range Fa2.0-50.3, N = 10), low-Ca pyroxene (Fs21.6±14.9Wo2.3±2.2, range Fs2.3-37.0Wo0.6-5.5, N = 4), pigeonite (Fs30.6Wo9.5), subcalcic augite (Fs10.3Wo33.9). Classification: R3 chondrite. Specimens: 21.3 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) 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 7547 approved meteorites from (Northwest Africa) (plus 1970 unapproved names) |