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Northwest Africa 12764 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12764 This is an OFFICIAL meteorite name. Abbreviation: NWA 12764 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 158.8 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 643 approved meteorites (plus 1 unapproved name) classified as CO3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 26 Sep 2019 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12764 (NWA 12764) (Northwest Africa) Purchased: 2018 Apr Classification: Carbonaceous chondrite (CO3) History: Purchased by Beat Booz in April 2018 from a Moroccan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Small chondrules (apparent diameter 170±80 µm, N = 21), mineral fragments and fine grained CAI are set in a fine grained matrix (~40 vol.%, deep reddish-brown in thin section). Opaque phases are kamacite, taenite, troilite and chromite. Geochemistry: Olivine, Fa24.2±21.3 (range Fa0.6-45.8, N = 5); low-Ca pyroxene, Fs0.9Wo3.3, Fs42.3Wo4.2; anorthite, An96.4Or0.1. Classification: Carbonaceous chondrite (CO3). Specimens: 20.5 g including one polished thin section at UWB; remainder with Mr. B. Booz. | ||||||||||||||||||||||||||||||
Data from: MB108 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 Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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