Meteoritical Bulletin: Entry for Northwest Africa 14928

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Northwest Africa 14928

Basic information

Name: Northwest Africa 14928
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14928
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 2.2 kg

Classification
history:

Recommended:

LL3 [explanation]

This is 1 of 409 approved meteorites classified as LL3. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 13 May 2022

Writeup

Writeup from MB 111:

Northwest Africa 14928 (NWA 14928)

(Northwest Africa)

Purchased: 2021 Oct

Classification: Ordinary chondrite (LL3)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-delineated, somewhat unequilibrated chondrules containing devitrified glass are set in a relatively fine-grained matrix containing stained kamacite, augite, troilite, chromite and merrillite, but no plagioclase.

Geochemistry: Olivine (Fa_28.5±1.7, range Fa_27.5-31.8, Fa PMD 5.2%, N = 6), low-Ca pyroxene (Fs_18.9±2.7Wo_1.2±1.3, range Fs_15.1-23.1Wo_0.3-3.9, N = 7).

Classification: Ordinary chondrite (LL3).

Specimens: 22.7 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Algeria
Date:	P 2021 Oct
Mass (g):	2201
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	28.5±1.7
Ferrosilite (mol%):	18.9±2.7
Wollastonite (mol%):	1.2±1.3
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	22.7
Type spec location:	PSF
Main mass:	J. Whitcomb
Comments:	Work name JW-130; 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. 111, in preparation (2022)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8390 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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