Meteoritical Bulletin: Entry for Northwest Africa 13494

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Northwest Africa 13494

Basic information

Name: Northwest Africa 13494
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13494
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 64.3 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2021)	Eucrite
Recommended:			Eucrite [explanation]

This is 1 of 616 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 14 Nov 2020

Writeup

Writeup from MB 109:

Northwest Africa 13494 (NWA 13494)

(Northwest Africa)

Purchased: 2020 Jan

Classification: HED achondrite (Eucrite)

Petrography: (J. Gattacceca, CEREGE) Brecciated igneous rock with subophitic texture. Main minerals are pyroxene (exsolved) and maskelynite with typical size 250 µm. Some clasts have smaller grain size. Other minerals: chromite, ilmenite, troilite, metal, silica polymorph.

Geochemistry: Low-Ca pyroxene Fs_63.9±1.8Wo_3.1±1.5, FeO/MnO = 32.5±1.5 (n=5). Maskelynite An_88.6Ab_11.3Or_0.2.

Classification: Achondrite (eucrite).

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Zagora, Morocco
Date:	P 2020 Jan
Mass (g):	64.3
Pieces:	1
Class:	Eucrite
Weathering grade:	low
Ferrosilite (mol%):	63.9±1.8 (n=5)
Wollastonite (mol%):	3.1±1.5
Magnetic suscept.:	3.24
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	13.2
Type spec location:	CEREGE
Main mass:	Kuntz
Comments:	work name K477; submitted by Jérôme Gattacceca

Institutions
and collections

CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Ryan Upchurch

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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