55.2g Eucrite Polymict | NWA 11341 Meteorite | Collector's Specimen
|Northwest Africa 11341|
Name: Northwest Africa 11341
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11341
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 240 g
This is 1 of 291 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
|Comments:||Approved 28 Jun 2017|
Writeup from MB 106:
Northwest Africa 11341 (NWA 11341)
Classification: HED achondrite (Eucrite, polymict)
History: Purchased by Dustin Dickens in Morocco, January 2016.
Physical characteristics: Seven identical appearing stones with weathered exteriors. Saw cuts show a breccia with black shock melt domains, a few vesicles were observed.
Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows fragmental breccia of basaltic clasts, feldspars clasts, pyroxene clasts, and vesicular shock melt pockets. Accessory silica, ilmenite and chromite are present.
Geochemistry: (C. Agee and B. Ha, UNM) Diogenitic pyroxene Fs22.6Wo2.1, Fe/Mn=31, n=1; cumulate eucritic pyroxene Fs35.1±2.9Wo5.3±2.6, Fe/Mn=29±2, n=4; basaltic eucritic pyroxene Fs50.2±4.5Wo8.3±4.3, Fe/Mn=30±1, n=7; basaltic sub-calcic augite Fs37.8Wo23.5, Fe/Mn=29, n=1; plagioclase An92±1.9, n=9.
Classification: Polymict eucrite based on the volume percent lithologies: ~62% basaltic eucrite, 31% cumulate eucrite, and ~8% diogenite.
Specimens: 20.0 g including a probe mount on deposit at UNM, Dustin Dickens holds the main mass.
|UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)|
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