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Northwest Africa 13037
Basic information Name: Northwest Africa 13037
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13037
Observed fall: No
Year found: 2018
Country: Algeria
Mass:help 463 g
Meteoritical Bulletin:  MB 108  (2020)  L3
Recommended:  L3    [explanation]

This is 1 of 763 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 23 Dec 2019
Writeup from MB 108:

Northwest Africa 13037 (NWA 13037)


Purchased: 2018 Dec

Classification: Ordinary chondrite (L3)

History: Purportedly found near Djelfa, Algeria, and purchased from the finder by Naji Ben Faraji and Mohamed Brahim Sueilem in December 2018 in Adrar, Algeria.

Physical characteristics: Very fresh specimen (465 g) coated by black fusion crust.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Closely packed, well-formed chondrules (apparent diameter 780±350 µm, N = 22) are set in a sparse matrix containing stained metal.

Geochemistry: Olivine (Fa22.0±6.5 (range Fa13.2-33.6, N = 18; Cr2O3 in ferroan examples 0.01-0.07 wt.%, mean 0.02±0.02 wt.%, N = 15), low-Ca pyroxene (Fs17.9±5.3Wo1.7±1.7 (range Fs9.9-23.0Wo0.9-4.3, N = 6), subcalcic augite (Fs11.7Wo22.8), augite (Fs14.6±7.4Wo37.6±3.0 (range Fs9.4-19.8Wo39.7-35.5, N = 2). Magnetic susceptibility log χ = 4.77.

Classification: Ordinary chondrite (L3).

Specimens: 27.6 g including one polished thin section at UWB; remainder held jointly by N. Ben Faraji and M. Brahim Sueilem.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Djelfa
Place of purchase:Adrar, Algeria
Date:P 2018 Dec
Mass (g):463
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):22.0±6.5
Ferrosilite (mol%):17.9±5.3
Wollastonite (mol%):1.7±1.7
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):27.6
Type spec location:UWB
Main mass:N. Ben Faraji/M. Brahim Sueilem
Comments:Work name MN08; 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)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     This is 1 of 1167 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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