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:

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

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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 111, in preparation (2022)

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9370 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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