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| Northwest Africa 11828 | |||||||||||||||||||||
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| 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:  5.34 kg | ||||||||||||||||||||
| Classification history: |
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 |
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: MB107 Table 0 Line 0: |
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| Institutions and collections |
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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| Geography: |
Statistics: This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) | ||||||||||||||||||||