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Northwest Africa 13100
Basic information Name: Northwest Africa 13100
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13100
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 440 g
Recommended:  LL6    [explanation]

This is 1 of 2843 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 10 Jan 2020
Writeup from MB 109:

Northwest Africa 13100 (NWA 13100)

(Northwest Africa)

Purchased: 2019

Classification: Ordinary chondrite (LL6)

History: Purchased in 2019 by Luc Labenne from a dealer in Erfoud, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of fairly closely packed angular clasts, which are extensively recrystallized but contain rare relict chondrules and some altered metal.

Geochemistry: Olivine (Fa30.3±0.5 (range Fa29.9-31.2, N = 5), low-Ca pyroxene (Fs26.6±0.3Wo2.3±0.4 (range Fs25.4-26.0Wo1.9-2.9, N = 5), high-Ca pyroxene (Fs11.4±1.0Wo42.2±1.4 (range Fs10.3-11.5Wo43.6-40.9, N = 3).

Classification: Ordinary chondrite (LL6 breccia).

Specimens: 22.3 g including one polished thin section at UWB; remainder with Mr. L. Labenne.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2019
Mass (g):440
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):30.3±0.5
Ferrosilite (mol%):25.6±0.3
Wollastonite (mol%):2.3±0.4
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.3
Type spec location:UWB
Main mass:L. Labenne
Comments:Work name LAB 100919; 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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 8138 approved meteorites from (Northwest Africa) (plus 1941 unapproved names)

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