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Northwest Africa 11026 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11026 This is an OFFICIAL meteorite name. Abbreviation: NWA 11026 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 340 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 396 approved meteorites classified as LL4. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||
Comments: | Approved 17 Dec 2016 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 105:
Northwest Africa 11026 (NWA 11026) (Northwest Africa) Find: 2016 Classification: Ordinary chondrite (LL4) History: Purchased by Fayssal Mezgouri in Morocco and sold to Dustin Dickens in 2016 Physical characteristics: Single stone with an elongated cylindrical shape displaying a smooth, somewhat mottled, black patina. Petrography: (A. Rubin, UCLA) The rock has well-defined chondrules and some polysynthetically twinned, low-Ca, monoclinic, pyroxene grains. Plagioclase grains are about 15 μm in size. There are no coarse Ca-pyroxene grains. Chondrule glass is absent. There is minor integration between chondrules and matrix, consistent with type 4. About 30% of the metal grains have been transformed into limonite, consistent with W2. Some olivine grains exhibit weak mosaic extinction, consistent with shock-stage S4. Also present are narrow trails of troilite grains that permeate the rock and surround chondrules and chondrule fragments. Maskelynite is absent. Geochemistry: Mineral composition and geochemistry: olivine Fa27.4±0.3 (n=16) low-Ca pyroxene Fs22.3±0.2Wo1.8±0.6 (n=9). Classification: LL4 Specimens: 44.8 g at UCLA including a thin section. | ||||||||||||||||||||||||||||
Data from: MB105 Table 0 Line 0: |
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Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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