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Northwest Africa 14521
Basic information Name: Northwest Africa 14521
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14521
Observed fall: No
Year found: 2021
Country: Morocco
Mass:help 518 g
Classification
  history:
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 15 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14521 (NWA 14521)

Morocco

Purchased: 2021

Classification: Martian meteorite (shergottite)

History: Purchased by Zhishu Wang in 2021 from a meteorite dealer

Physical characteristics: The stone has a round shape without black fusion crust. Some terrestrial silica grains are visible stucked along the surficial cracks of meteorite.

Petrography: (J. Ji, S. Hu and Y. Lin, IGGCAS) This meteorite display ophitic textures, mainly composed of pyroxene and maskelynite, with minor merrillite, apatite, ilmenite, troilite and olivine. Most pyroxene grains are zoned in chemical compositions. Shock induced melt rock pockets are observed in the section.

Geochemistry: Mineral compositions and geochemistry: (J. Ji, S. Hu and Y. Lin, IGGCAS) Pigeonite: Fs31.5-67.3Wo16.3-21.4 (n=6), augite: Fs24.4-61.2Wo22.8-32.7(n=11), pyroxene Fe/Mn=35.4±4.1 (mole ratio, n=17), maskelynite: An49.6-57.1Ab41.1-49.1 (n=6).

Classification: (J. Ji, S. Hu and Y. Lin, IGGCAS) Martian (shergottite)

Specimens: The main mass is held by Zhishu Wang

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):518
Pieces:1
Class:Martian meteorite (shergottite)
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):31.5-67.3;24.4-61.2
Wollastonite (mol%):16.3-21.4;22.8-32.7
Classifier:J. Ji, S. Hu and Y. Lin, IGGCAS
Type spec mass (g):20
Type spec location:IGGCAS
Main mass:Zhishu Wang
Comments:Submitted by J. Ji, S. Hu and Y. Lin, IGGCAS
Institutions
   and collections		 IGGCAS: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)
Catalogs:
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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Photos:
CreditPhotos
Public domain photographs:
Ji Jianglong      
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1992 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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