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Northwest Africa 8343
Basic information Name: Northwest Africa 8343
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8343
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 701 g
Meteoritical Bulletin:  MB 103  (2014)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 453 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 27 Apr 2014
Writeup from MB 103:

Northwest Africa 8343 (NWA 8343)

(Northwest Africa)

Purchased: 2013

Classification: HED achondrite (Howardite)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, 2013.

Physical characteristics: Four stones with identical appearance (338.70 g, 192.18 g, 96.79 g, 73.25 g), irregular dark brown weathered exterior. Saw cut reveals breccia with white, green, and dark gray clasts.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a fragmental to cataclastic breccia with equilibrated (exsolution lamellae) and unequilibrated (igneous zoned) pyroxenes throughout. Silica, ilmenite, chromite, and iron-nickel metal present. Approximately 30% of this meteorite is diogenitic, ~60% is basaltic eucrite, and ~10% is cumulate eucrite.

Geochemistry: (C. Agee and N. Muttik, UNM) Diogenite minerals: low-Ca pyroxene Fs29.5±5.2Wo3.6±1.3, Fe/Mn=30±3, n=4; olivine Fa33.5, Fe/Mn=61, n=1; plagioclase An93.2±0.7Ab6.5±0.6Or0.3±0.1, n=3. Basaltic eucrite minerals: low-Ca pyroxene Fs55.3±2.7Wo8.1±2.9, Fe/Mn=32±0, n=9; augite Fs39.1±1.2Wo39.8±0.5, Fe/Mn=33±1, n=2, olivine Fa77.4, Fe/Mn=41, n=1; plagioclase An88.4±2.2Ab11.1±2.2Or0.5±0.0, n=2. Cumulate eucrite minerals: low-Ca pyroxene Fs37.9.3±2.2Wo5.0±2.0, Fe/Mn=30±1, n=3; plagioclase An91.5±0.3Ab8.0±0.3Or0.5±0.1, n=2.

Classification: Achondrite (howardite)

Specimens: 22.5 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):700.92
Classifier:C. Agee, UNM
Type spec mass (g):22.5
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G511; submitted by C. Agee, UNM
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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