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Northwest Africa 14522
Basic information Name: Northwest Africa 14522
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14522
Observed fall: No
Year found: 2020
Country: Morocco
Mass:help 5.5 kg
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 565 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 11 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14522 (NWA 14522)

Morocco

Purchased: 2020

Classification: HED achondrite (Eucrite)

History: Purchased by Wei Jiang in 2021 from a meteorite dealer

Physical characteristics: The individual specimen is partially covered by black fusion crust. Coarse grained pyroxene and plagioclase phenocrysts are visible in hand specimens.

Petrography: ( J. Ji, S. Hu and Y. Lin, IGGCAS) The two major phases in this meteorite are pyroxene and plagioclase. Minor phases are chromite, ilmenite, silica, troilite and metal. Some pyroxene phenocrysts up to 0.5 mm are observed in the section. Some regions in the section display brecciated textures and composed of fine-grained pyroxene and plagioclase. Most pyroxene grains display cracks.

Geochemistry: Mineral compositions and geochemistry: (J. Ji, S. Hu and Y. Lin, IGGCAS) Low-Ca pyroxene: Fs48.7±5.1Wo2.7±1.5 (n=10), Fe/Mn=34.6±1.7 (mole ratio), plagioclase: An92.5±1.7Ab7.0±1.2 (n=8).

Classification: (J. Ji, S. Hu and Y. Lin, IGGCAS) Brecciated Eucrite

Specimens: The main mass is held by Wei Jiang

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020
Mass (g):5500
Pieces:36
Class:Eucrite
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):35.8-54.0
Wollastonite (mol%):1.4-6.9
Classifier:J. Ji, S. Hu and Y. Lin, IGGCAS
Type spec mass (g):31.4
Type spec location:IGGCAS
Main mass:Wei Jiang
Finder:Wei Jiang
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 1902 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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