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Northwest Africa 13424
Basic information Name: Northwest Africa 13424
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13424
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 103.8 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1728 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Sep 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13424 (NWA 13424)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Ordinary chondrite (L4)

History: Purchased by Grant Harkness in October 2019 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed chondrules are set in a relatively coarse grained matrix containing stained metal, troilite, chromite and apatite.

Geochemistry: Olivine (Fa24.2±0.7, range Fa23.4-25.1, N = 5), low-Ca pyroxene (Fs20.9±0.8Wo1.4±0.4, range Fs20.0-22.0Wo1.0-2.2, N = 6).

Classification: Ordinary chondrite (L4).

Specimens: 22.34 g including one polished thin section at PSF; remainder in the Harkness Collection.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2019 Oct
Mass (g):103.8
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):24.2±0.7
Ferrosilite (mol%):20.9±0.8
Wollastonite (mol%):1.4±0.4
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):22.34
Type spec location:PSF
Main mass:Harkness Collection
Comments:Work name HC-18; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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