Meteoritical Bulletin: Entry for Northwest Africa 13492

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Northwest Africa 13492

Basic information

Name: Northwest Africa 13492
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13492
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 129.5 g

Classification
history:

Recommended:

Eucrite [explanation]

This is 1 of 569 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 13492 (NWA 13492)

(Northwest Africa)

Purchased: 2019 Oct

Classification: HED achondrite (Eucrite)

History: Bought from a dealer from northwest Africa.

Petrography: (J. Gattacceca, CEREGE) Brecciated igneous rock with mostly subophitic texture. Grain size is ~1.5 mm grain size although some clasts have smaller grainsize. Main minerals are low-Ca pyroxene (exsolved) and plagioclase. Other minerals: silica polymorph (to 100 μm), ilmenite, troilite, metal.

Geochemistry: Low-Ca pyroxene Fs_65.5±1.9Wo_2.2±0.5, FeO/MnO = 31.3±0.8 (n=5). Plagioclase An_87.0Ab_12.6Or_0.4(n=2).

Classification: Achondrite (eucrite). The low-Ca pyroxene is unusually iron rich (Fs_65.6).

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Munich, Germany
Date:	P 2019 Oct
Mass (g):	129.5
Pieces:	1
Class:	Eucrite
Ferrosilite (mol%):	65.5±1.9 (n=5)
Wollastonite (mol%):	2.2±0.5
Magnetic suscept.:	3.21
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	21.1
Type spec location:	CEREGE
Main mass:	Kuntz
Comments:	work name K473; 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 29 Oct 2018)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 109, in preparation (2020)

Find references in NASA ADS:
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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 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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