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Northwest Africa 13419
Basic information Name: Northwest Africa 13419
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13419
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 53 g
Recommended:  Acapulcoite    [explanation]

This is 1 of 88 approved meteorites classified as Acapulcoite.   [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites
Comments: Approved 1 Nov 2020
Writeup from MB 109:

Northwest Africa 13419 (NWA 13419)

(Northwest Africa)

Purchased: 2008 Jun

Classification: Primitive achondrite (Acapulcoite)

History: Purchased by Adam Aaronson in June 2008 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Protogranular aggregate (mean grainsize ~400 µm) of predominantly olivine and orthopyroxene with subordinate diopside and altered kamacite (~15 vol.%), plus accessory chromite and merrillite. Secondary goethite is present along grain boundaries.

Geochemistry: Olivine (Fa10.9±1.4, range Fa8.4-12.2, FeO/MnO = 22-24, N = 8), orthopyroxene (Fs11.1-11.3Wo1.6-3.2, FeO/MnO = 13-14, N = 4), diopside (Fs4.3-4.7Wo44.0-45.5, FeO/MnO = 8-9, N = 4). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.80.

Classification: Acapulcoite.

Specimens: 10.7 g including one polished thin section at UWB; remainder with Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2008 Jun
Mass (g):53
Shock stage:low
Weathering grade:low
Fayalite (mol%):10.9±1.4 (n=8)
Ferrosilite (mol%):11.1-11.3
Wollastonite (mol%):1.6-3.2
Magnetic suscept.:4.80
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):10.7
Type spec location:UWB
Main mass:A. Aaronson
Comments:Work name M847; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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