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	(2021)	CO3
Recommended:			CO3 [explanation]

This is 1 of 654 approved meteorites (plus 2 unapproved names) 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 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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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9933 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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