Meteoritical Bulletin: Entry for Northwest Africa 14876

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Northwest Africa 14876

Basic information

Name: Northwest Africa 14876
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14876
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 297 g

Classification
history:

Recommended:

EL6 [explanation]

This is 1 of 129 approved meteorites classified as EL6. [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites

Comments:

Approved 29 Jan 2023

Writeup

Writeup from MB 112:

Northwest Africa 14876 (NWA 14876)

(Northwest Africa)

Purchased: 2021 Sep

Classification: Enstatite chondrite (EL6)

History: Purchased by Jason Whitcomb in September 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Protogranular aggregate composed of enstatite, diopside and sodic plagioclase with accessory Si-bearing kamacite, daubreelite, alabandite, oldhamite, troilite and schreibersite. Sparse radial pyroxene chondrules are present.

Geochemistry: Enstatite (Fs_0.2±0.1Wo_1.6±0.1, range Fs_0.0-0.4Wo_1.5-1.7, N = 5), diopside (Fs_0.2±0.1Wo_45.9±0.1, range Fs_0.1-0.3Wo_45.8-46.0, N = 3), plagioclase (Ab_81.5±0.7An_14.2±0.4Or_4.4±0.3, range Ab_80.6-82.2An_13.8-14.7Or_4.0-4.7, N = 4), metal (Ni 5.5-6.5 wt.%, Si 0.8±0.0 wt.%, N = 7).

Classification: Enstatite chondrite (EL6).

Specimens: 22.3 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB112
  Table 0
  Line 0:

Place of purchase:	Algeria
Date:	P 2021 Sep
Mass (g):	297
Pieces:	1
Class:	EL6
Shock stage:	S2
Weathering grade:	W1
Ferrosilite (mol%):	0.2±0.1
Wollastonite (mol%):	1.6±0.1
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	22.3
Type spec location:	PSF
Main mass:	J. Whitcomb
Comments:	Work name JW-108; submitted by A. Irving

Institutions
and collections

PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 112, in preparation (2023)

Find references in NASA ADS:
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Photos:

Credit	Photos
Public domain photographs:
A. Irving

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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