Meteoritical Bulletin: Entry for Northwest Africa 13491

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Northwest Africa 13491

Basic information

Name: Northwest Africa 13491
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13491
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 144.5 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	CO3
Recommended:			CO3 [explanation]

This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 14 Nov 2020

Writeup

Writeup from MB 109:

Northwest Africa 13491 (NWA 13491)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Carbonaceous chondrite (CO3)

History: Bought from a dealer from northwest Africa.

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (average apparent diameter 180±80 µm, n=21) and small CAIs set in abundant matrix (38vol% by point counting, n=105). Opaque minerals are metal, troilite and magnetite.

Geochemistry: Olivine Fa_20.2±13.7, Fa PMD 61% (n=8). Cr₂O₃ in ferroan olivine 0.16±0.07 wt% (n=7). Low-Ca pyroxene Fs₁₃₄Wo_4.9(n=1).

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Munich, Germany
Date:	P 2019 Oct
Mass (g):	144.5
Pieces:	1
Class:	CO3
Weathering grade:	moderate
Fayalite (mol%):	20.2±13.7 (n=8)
Ferrosilite (mol%):	1.4 (n=1)
Wollastonite (mol%):	4.9
Magnetic suscept.:	4.42
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	26.9
Type spec location:	CEREGE
Main mass:	Kuntz
Comments:	work name K471; 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 Meteoritical Bulletin, no. 109, in preparation (2020)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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