Meteoritical Bulletin: Entry for Northwest Africa 15359

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Northwest Africa 15359

Basic information

Name: Northwest Africa 15359
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15359
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 525 g

Classification
history:

Recommended:

EL3 [explanation]

This is 1 of 26 approved meteorites classified as EL3. [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites

Comments:

Approved 27 Nov 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 15359 (NWA 15359)

(Northwest Africa)

Purchased: 2022

Classification: Enstatite chondrite (EL3)

History: Purchased by John Divelbiss in 2022 from a dealer in Riverside, California, who had obtained the material from a Moroccan source.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed, highly magnesian glass-bearing chondrules (apparent diameter 740±450 µm, N = 24) are set in a fresh fine-grained matrix (~15 vol.%, opaque in thin section) containing Si-bearing kamacite, daubreelite, alabandite, Ti-Cr bearing troilite, oldhamite, silica polymorph and intermediate plagioclase.

Geochemistry: Forsterite (Fa_0.2±0.3, range Fa_0.1-0.8, N = 6), enstatite (Fs_0.4±0.2Wo_1.0±0.1, range Fs_0.2-0.8Wo_0.8-1.3, N = 12), diopside (Fs_0.9±0.3Wo_46.5±0.5, range Fs_0.5-1.2Wo_47.1-46.1, N = 4), kamacite (Ni 6.7-8.1 wt.%, Si 0.7 wt.%, N = 6).

Classification: Enstatite chondrite (EL3).

Specimens: 24.6 g including one polished thin section at UWB; remainder with Mr. J. Divelbiss.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Riverside, CA
Date:	P 2022
Mass (g):	525
Pieces:	1
Class:	EL3
Shock stage:	S2
Weathering grade:	W0
Fayalite (mol%):	0.2±0.3
Ferrosilite (mol%):	0.4±0.2
Wollastonite (mol%):	1.0±0.1
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	24.5
Type spec location:	UWB
Main mass:	J. Divelbiss
Comments:	Work name JD22-13; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 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)

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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