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Northwest Africa 13114
Basic information Name: Northwest Africa 13114
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13114
Observed fall: No
Year found: 2019
Country: Algeria
Mass:help 1787 g
Recommended:  CV3    [explanation]

This is 1 of 583 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 9 Feb 2020
Writeup from MB 109:

Northwest Africa 13114 (NWA 13114)


Purchased: 2019 Apr

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Mbark Arjdal in April 2019 from an Algerian dealer.

Petrography: (A. Irving, UWS, and J. Boesenberg, BrownU) Well-formed granular, PO and BO chondrules (apparent diameter 1040±480 µm, N = 24; some glass-bearing) together with amoeboid, very fine grained CAI occur in a highly oxidized matrix (~30 vol.%, red-brown in thin section). Cr-bearing magnetite is present in chondrules. Accessory phases in the matrix include pentlandite, troilite and chromite; metal is absent.

Geochemistry: Olivine (Fa22.9±16.6 (range Fa1.1-43.2, N = 12), low-Ca pyroxene (Fs0.5±0.1Wo0.7±0.1 (range Fs0.40.05Wo0.6-0.8, N = 5), high-Ca pyroxene (Fs0.3±0.1Wo19.5±2.0 (range Fs0.2-0.5Wo16.6-21.1, N = 5), magnetite in chondrules (Cr2O3 = 1.3-2.3 wt.%, NiO = 0.06 wt.%, N = 3).

Classification: Carbonaceous chondrite (CV3, oxidized subclass).

Specimens: 66 g including one polished thin section at UWB; main mass with Mr. M. Arjdal.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2019 Apr
Mass (g):1787
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):22.9±16.6
Ferrosilite (mol%):0.5±0.1
Wollastonite (mol%):0.7±0.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):66
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj ZM 113; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 1187 approved meteorites from Algeria (plus 28 unapproved names) (plus 4 impact craters)

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