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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 300 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 9344 approved meteorites from (Northwest Africa) (plus 1872 unapproved names)

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