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| Northwest Africa 11489 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 11489 This is an OFFICIAL meteorite name. Abbreviation: NWA 11489 Observed fall: No Year found: 2017 Country: Morocco Mass:  19.7 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 603 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 21 Nov 2017 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 106:
Northwest Africa 11489 (NWA 11489) Morocco Purchased: 2017 Classification: HED achondrite (Eucrite) History: A single stone weighing 19.7 g was found in Morocco prior to 2016. J. Donald Cline and John Sinclair acquired the sample from a meteorite dealer at the Tucson Gem and Mineral Show in February of 2017. Physical characteristics: The stone has a flattened tabular shape, is light orange in color and ~60% of the sample is covered in a patchy, dark black, flow-lined fusion crust. A broken face shows a light-gray, crystalline interior. Petrography: Description and classification (A. Love, App): Crystalline rock composed of granoblastic-textured plagioclase and exsolved pyroxene (with an average grain size of 590 µm). Portions of the sample are crosscut by zones of granular debris composed of host rock. Additional minerals are chromite and Si-polymorph. Geochemistry: (A. Love, App) Low-Ca pyroxene host Fs45.0±0.7 Wo3.2±1.0 (Fs44.1-46.2 Wo1.6-4.8, FeO/MnO=28.1-28.9, N=12); high-Ca pyroxene exsolution lamellae Fs16.0±0.3 Wo47.0±0.2 (Fs15.4-16.4 Wo46.5-47.4, N=10); plagioclase An97.0±0.3 (An96.5-97.4, N=10). Classification: HED (equilibrated monomict cumulate eucrite breccia). Textures and compositions show this specimen has experienced thermal equilibration. Mineral compositions suggest this is a cumulate eucrite. Specimens: PARI holds the main mass. Two slices weighing 4.82 g and a polished thin section are on deposit at App. | ||||||||||||||||||||||||||||||
| Data from: MB106 Table 0 Line 0: |
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| Institutions and collections |
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) PARI: Pisgah Astronomical Research Institute 1 Pari Dr Rosman, NC 28772, United States (institutional address; updated 13 Sep 2016) |
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| Catalogs: |
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| 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.
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Geography:
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Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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| Revision history: |
This lists important revisions made to data for this record.
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