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Northwest Africa 14919
Basic information Name: Northwest Africa 14919
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14919
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 35 g
Recommended:  CO3    [explanation]

This is 1 of 642 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 20 Jun 2022
Writeup from MB 111:

Northwest Africa 14919 (NWA 14919)

(Northwest Africa)

Purchased: 2021 Sep

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Juan Avilés Poblador in September 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, relatively small, unequilibrated chondrules (apparent diameter 180±110 µm, N = 24), zoned mineral fragments and very fine-grained CAI are set in a fine grained matrix (~ 40 vol.%, deep reddish-brown in thin section) containing magnetite, troilite, pentlandite and minor kamacite, plus secondary Fe oxide and barite.

Geochemistry: Olivine (Fa21.2±19.8, range Fa0.8-49.8, N = 4; Cr2O3 in ferroan olivine 0.15-0.48 wt.%, mean 0.28±0.13 wt.%, N = 5), low-Ca pyroxene (Fs3.1±3.4Wo2.1±1.4, range Fs1.0-8.2Wo0.6-3.7, N = 4), ferroan low-Ca pyroxene (Fs42.4±2.0Wo1.8±0.4, range Fs41.0-43.8Wo1.5-2.0, N = 2), subcalcic augite (Fs1.6Wo28.9), augite (Fs5.9Wo36.4), magnetite (Cr2O3 0.2 wt.%, 1.7 wt.%, N = 2).

Classification: Carbonaceous chondrite (CO3, magnetite-bearing).

Specimens: 15.85 g including two polished thin sections at UWB; remainder with Mr. J. Poblador.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Sep
Mass (g):35
Shock stage:S2
Weathering grade:low
Fayalite (mol%):21.2±19.8
Ferrosilite (mol%):3.1±3.4
Wollastonite (mol%):2.1±1.4
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):15.85
Type spec location:UWB
Main mass:J. Poblador
Comments:Work name JAP21-5; 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. 111, in preparation (2022)
Find references in NASA ADS:
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     This is 1 of 9370 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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