Meteoritical Bulletin: Entry for Northwest Africa 13499

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Northwest Africa 13499

Basic information

Name: Northwest Africa 13499
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13499
Observed fall: No
Year found: 2020
Country: Algeria
Mass: 177.7 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 13499 (NWA 13499)

Algeria

Purchased: 2020 Jan

Classification: HED achondrite (Eucrite)

Petrography: (J. Gattacceca, CEREGE) Igneous rock with subopthitic texture. Main minerals are pyroxene (exsolved) and plagioclase with typical grain size 600 µm. Other minerals: metal, troilite, chromite, ilmenite. Vesicles up to 200 µm are present.

Geochemistry: Low-Ca pyroxene Fs_42.9±0.9Wo_3.7±0.9(n=7), Ca-pyroxene Fs_25.0Wo_35.5(n=2), Fs_16.5Wo_44.9(n=2), FeO/MnO = 27.8±2.0 (n=11). Plagioclase An_92.2±0.5Ab_7.5±0.4Or_0.4±0.0(n=4).

Classification: Achondrite (eucrite).

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Guelmim
Date:	P 2020 Jan
Mass (g):	177.7
Pieces:	1
Class:	Eucrite
Weathering grade:	low
Magnetic suscept.:	2.45
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	21.2
Type spec location:	CEREGE
Main mass:	Pierre-Marie Pelé
Comments:	work name PM20AC1; 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)

Catalogs:

References:

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

Find references in NASA ADS:
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Geography:

Algeria

Coordinates:

Unknown.

Statistics:
This is 1 of 1250 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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