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Northwest Africa 11828
Basic information Name: Northwest Africa 11828
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11828
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 5.34 kg
Meteoritical Bulletin:  MB 107  (2018)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 321 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 22 Jun 2018
Writeup from MB 107:

Northwest Africa 11828 (NWA 11828)

(Northwest Africa)

Find: 2017

Classification: Lunar meteorite (feldspathic breccia)

History: Stones were acquired from a Moroccan dealer in 2017.

Physical characteristics: A group of dark- and light-gray stones with no fusion crust.

Petrography: (S. Demidova and D. Badyukov, Vernad): The meteorites are polymict breccias containing numerous mineral fragments and large rounded lithic clasts occuring within a brownish cryptocrystalline to glassy impact-melt matrix; the lithic clast population comprises impact-melt breccias, as well as cataclastic granulitic rocks of anorthositic, noritic, gabbro-noritic and troctolitic compositions; clasts of impact-melt breccias typically show breccia-in-breccia textures; glass fragments and rare spherules are present.

Geochemistry: feldspar, An92-98; orthopyroxene, Wo2-5En60-81; clinopyroxene; Wo5-43En33-69, olivine, Fo22-93 (FeO/MnO = 85); accessory minerals include: ilmenite (2.6-6.2 wt % MgO), Cr-rich ulvöspinel, Ti,Al-rich chromite, silica, Ca-phosphate, armalcolite, baddeleyite, troilite, and abundant FeNi metal; the stones are moderately weathered; carbonate veins and Fe hydroxides are present.

Classification: Lunar, feldspathic regolith breccia

Specimens: 23 type specimens of 662.5 g, and a thin section, Vernad, the main mass with an anonymous keeper

Data from:
  Table 0
  Line 0:
Place of purchase:Morroco
Mass (g):5340
Class:Lunar (feldsp. breccia)
Classifier:F. Badyukov, Vernad
Type spec mass (g):663
Type spec location:Vernad
Main mass:anonymous
Comments:Submitted by Dmitry Badyukov
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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