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Northwest Africa 11026
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:help 340 g
Meteoritical Bulletin:  MB 105  (2016)  LL4
Recommended:  LL4    [explanation]

This is 1 of 387 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 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:
  Table 0
  Line 0:
Mass (g):340
Shock stage:S4
Weathering grade:W2
Fayalite (mol%):27.4±0.3 (N=16)
Ferrosilite (mol%):22.3±0.2
Wollastonite (mol%):1.8±0.6 (N=9)
Classifier:A. Rubin, UCLA
Type spec mass (g):44.8
Type spec location:UCLA
Main mass:Dustin Dickens
Comments:TMSUCLA006; submitted by Dustin Dickens
   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)
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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     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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