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Northwest Africa 14714
Basic information Name: Northwest Africa 14714
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14714
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 4 kg
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 298 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 19 Mar 2022
Writeup from MB 111:

Northwest Africa 14714 (NWA 14714)

(Northwest Africa)

Purchased: 2021

Classification: Martian meteorite (Shergottite)

History: Purchased January, 2021 by Mark Lyon from a Northwest African dealer

Physical characteristics: Four identical appearing stones with desert weathered exteriors. Saw cut reveals a medium grained cumulate with light and dark crystals, with the darker crystals coinciding with areas that appear to be shock darkened. Numerous black shock melt pockets are present.

Petrography: (A. Ross, UNM; D. Dickens, NMMS; C. Agee, UNM) Examination of a polished microprobe mount shows ~50% igneous-zoned subcalcic augite and ~45% maskelynite, with ubiquitous Ti-magnetite, ilmenite, merrillite, and troilite making up the remainder. Shock melt was observed.

Geochemistry: (A. Ross, UNM) Pigeonite Fs49.4±1.9Wo13.5±1.4, Fe/Mn=35±2, n=10; augite Fs28.0±5.6Wo32.7±1.4, Fe/Mn=31±3, n=10; plagioclase An53.6±0.7Ab45.4±0.8, Or 1.0±0.1, n=6.

Classification: Martian basaltic shergottite

Specimens: 21.42 g including a probe mount on deposit at UNM, Mark Lyon holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021
Mass (g):4 kg
Class:Martian (shergottite)
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):49.4±1.9, 28.0±5.6
Wollastonite (mol%):13.5±1.4, 32.7±1.4
Classifier:C. Agee, UNM; D. Dickens, NMMS
Type spec mass (g):21.42 g
Type spec location:UNM
Main mass:Mark Lyon
Comments:Field Name ML-15; submitted by D. Dickens
   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. 111, in preparation (2022)
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     This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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