Meteoritical Bulletin: Entry for Northwest Africa 13138

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Northwest Africa 13138

Basic information

Name: Northwest Africa 13138
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13138
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 16.7 g

Classification
history:

Recommended:

Lunar (feldsp. breccia) [explanation]

This is 1 of 220 approved meteorites classified as Lunar (feldsp. breccia). [show all]
Search for other: Lunar meteorites

Comments:

Approved 17 Feb 2020

Writeup

Writeup from MB 109:

Northwest Africa 13138 (NWA 13138)

(Northwest Africa)

Purchased: 2019

Classification: Lunar meteorite (feldspathic breccia)

Physical characteristics: Grey irregular fragments. Cut face show a dark-gray interior with mm-sized white angular clasts.

Petrography: (J. Gattacceca, CEREGE) Sparse mineral clasts (anorthite, olivine, pyroxene, to 300 μm) in a feldspathic melt rock matrix. Melt rock has numerous vesicles with typical sizes 30 µm. Chromite, troilite and rare metal are present.

Geochemistry: Anorthite An_97.1Ab_3.0Or_0.0(n=2). Augite Fs_21.1±14.8Wo_36.5±8,7, FeO/MnO=53 (n=3). Olivine Fa_26.9±4.2, FeO/MnO=110 (n=2).

Classification: Lunar (feldspathic melt breccia).

Specimens: Type specimen at CEREGE. Main mass with Jérémy Bassemon.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2019
Mass (g):	16.70
Pieces:	1
Class:	Lunar (feldsp. breccia)
Weathering grade:	minor
Magnetic suscept.:	2.94
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	3.5
Type spec location:	CEREGE
Main mass:	Jérémy Bassemon
Comments:	work name CM31; 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)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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