|
Northwest Africa 13867 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 13867 This is an OFFICIAL meteorite name. Abbreviation: NWA 13867 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 519 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 645 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 20 Dec 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13867 (NWA 13867) (Northwest Africa) Purchased: 2020 May Classification: Carbonaceous chondrite (CO3) History: Purchased by John Higgins in May, 2020 from a dealer in Adrar, Algeria. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very small chondrules (apparent diameter 210±150 µm, N = 22), mineral fragments and very fine grained CAI are set in a very dark matrix (~20 vol.%, deep reddish-brown to almost opaque in thin section) containing kamacite, taenite, troilite, pentlandite and minor secondary Ca sulfate. One studied CAI consists of perovskite, gehlenite, aluminous diopside, hibonite and orthopyroxene in a grossite matrix. There is also magnetite present Geochemistry: Olivine Fa16.8±15.0, range Fa0.2-36.9, N=5. Cr2O3 in ferroan olivine 0.13-0.27 wt.% (N=5), low-Ca pyroxene (Fs19.7±24.9Wo2.8±2.3, range Fs1.0-54.5Wo0.6-5.8, N = 4), diopside (Fs1.5Wo35.6; Fs0.4Wo52.0; N = 2), plagioclase (An62.0Or0.1; An95.9Or0.1; N = 2). Classification: Carbonaceous chondrite (CO3). Specimens: 25.2 g including one polished thin section at UWB; remainder with Mr. J. Higgins. | ||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
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) |
||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||
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
| ||||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
|