Meteoritical Bulletin: Entry for Northwest Africa 14919

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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: 35 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	CO3
Recommended:			CO3 [explanation]

This is 1 of 645 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

help

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 (Fa_21.2±19.8, range Fa_0.8-49.8, N = 4; Cr₂O₃ in ferroan olivine 0.15-0.48 wt.%, mean 0.28±0.13 wt.%, N = 5), low-Ca pyroxene (Fs_3.1±3.4Wo_2.1±1.4, range Fs_1.0-8.2Wo_0.6-3.7, N = 4), ferroan low-Ca pyroxene (Fs_42.4±2.0Wo_1.8±0.4, range Fs_41.0-43.8Wo_1.5-2.0, N = 2), subcalcic augite (Fs_1.6Wo_28.9), augite (Fs_5.9Wo_36.4), 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:
  MB111
  Table 0
  Line 0:

Place of purchase:	Algeria
Date:	P 2021 Sep
Mass (g):	35
Pieces:	1
Class:	CO3
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

Institutions
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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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Revision
history:

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