|
Northwest Africa 11557 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 11557 This is an OFFICIAL meteorite name. Abbreviation: NWA 11557 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 393 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 11567 approved meteorites (plus 23 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 18 Dec 2017 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11557 (NWA 11557) (Northwest Africa) Purchased: 2016 Classification: Ordinary chondrite (H5) History: Purchased by Ben Hoefnagels in 2017 from a dealer in Guelmim, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Sparse chondrules (some well-formed) occur in a recrystallized matrix containing relatively abundant altered metal. Geochemistry: Olivine (Fa18.9-19.3, N = 2), orthopyroxene (Fs16.4-16.6Wo1.9-1.2, N = 2), subcalcic augite (Fs26.9Wo32.9), augite (Fs5.6-6.6Wo44.0-44.7, N = 2). Classification: Ordinary chondrite (H5). Specimens: 20.27 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels. | ||||||||||||||||||||||||||||||
Data from: MB106 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) 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., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
| ||||||||||||||||||||||||||||||
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.
|