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Northwest Africa 14362
Basic information Name: Northwest Africa 14362
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14362
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 57.8 g
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 284 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 11 Dec 2021
Writeup from MB 110:

Northwest Africa 14362 (NWA 14362)

(Northwest Africa)

Purchased: 2021 Jul

Classification: Martian meteorite (Shergottite)

History: Purchased by Rachid Chaoui in July 2021 from a dealer in Nouadhibou, Mauritania.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Microgabbroic texture (mean grainsize ~0.8 mm). Composed of bladed grains of pigeonite (exhibiting twinning and limited compositional zoning) and equant grains of olivine (exhibiting minimal zoning) with interstitial maskelynite plus accessory Ti-chromite (with ilmenite exsolution) and pyrrhotite. Some veinlets of secondary calcite are present.

Geochemistry: Olivine (Fa44.1-45.4, FeO/MnO = 55-59, N = 3), pigeonite (Fs26.9-34.0Wo9.3-11.2, FeO/MnO = 26-35, N = 4), maskelynite (An52.5-57.1Or1.0-1.5, N = 3).

Classification: Shergottite (microgabbroic).

Specimens: 12.8 g including one polished thin section at UWB; main mass with WangZ.

Data from:
  Table 0
  Line 0:
Place of purchase:Nouadhibou
Date:P 2021 Jul
Mass (g):57.8
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Fayalite (mol%):44.1-45.2
Ferrosilite (mol%):26.9-34.0
Wollastonite (mol%):9.3-11.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):12.8
Type spec location:UWB
Main mass:WangZ
Comments:Work name RC150.3; 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)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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