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Northwest Africa 11184
Basic information Name: Northwest Africa 11184
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11184
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 83 g
Meteoritical Bulletin:  MB 106  (2018)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 421 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 28 Mar 2017
Writeup from MB 106:

Northwest Africa 11184 (NWA 11184)

(Northwest Africa)

Purchased: 2015

Classification: HED achondrite (Howardite)

History: Purchased by Larry Atkins from Morocco in December 2015.

Physical characteristics: Single stone, no fusion crust. A saw cut reveals a breccia with green, white, and dark-gray clasts.

Petrography: (C. Agee, UNM) This meteorite is a polymict breccia consisting of ~75% diogenitic material and ~25% eucritic material, mostly in the form of cumulate eucrite clasts 500-1500 μm. Accessory kamacite, chromite and ilmenite are present.

Geochemistry: (C. Agee and B. Ha, UNM) diogenite olivine Fa38.7±4.0, Fe/Mn=52±1, n=3; diogenite low Ca pyroxene Fs22.2±1.3Wo1.9±0.7, Fe/Mn=30±0, n=3; eucrite pigeonite Fs52.6±5.7Wo11.1±8.2, Fe/Mn=30±2, n=4; plagioclase An89.0±0.6Ab10.5±0.6Or0.5±0.1, n=4.

Classification: Howardite

Specimens: 16.8 g including a probe mount on deposit at UNM, Larry Atkins holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):83
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):38.7±4.0
Ferrosilite (mol%):22.2±1.3; 52.6±5.7
Wollastonite (mol%):1.9±0.7; 11.1±8.2
Classifier:C. Agee, UNM
Type spec mass (g):16.8
Type spec location:UNM
Main mass:Larry Atkins
Comments:Submitted by C. Agee
   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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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