Meteoritical Bulletin: Entry for Northwest Africa 12469

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Northwest Africa 12469

Basic information

Name: Northwest Africa 12469
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12469
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 105.5 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	CV3
	MB 113	(2024)	CVox3
Recommended:			CVox3 [explanation]

This is 1 of 53 approved meteorites classified as CVox3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 22 Feb 2019
Revised 28 Mar 2024: Revised class based on metbull text

Writeup

help

Writeup from MB 108:

Northwest Africa 12469 (NWA 12469)

(Northwest Africa)

Purchased: 2017 Mar

Classification: Carbonaceous chondrite (CV3)

History: Purchased in Rissani by Pierre-Marie Pelé

Physical characteristics: Dark stone. Cut surface reveals chondrules and CAIs set in a dark matrix.

Petrography: Chondrules with average size 870 μm (n=19) and CAIs set in fine-grained matrix (48 vol% from point counting, n=168). Opaque minerals are sulfide and magnetite. Based on the structural order of the polyaromatic matter assessed by Raman spectroscopy, this meteorite is attributed a petrographic type >3.6. The Raman spectroscopy parameters of interest are FWHM-D (cm^-1)=92.91±7.02, ID/IG= 1.383 ±0.005 (see Bonal et al. 2016).

Geochemistry: Olivine Fa_2.7±2.5, PMD=66%, range Fa_0.6-8.1(n=6), Cr₂O₃ in ferroan olivine is 0.22±0.12wt% (n=5). Low-ca pyroxene Fs_4.9Wo_0.9(n=1)

Classification: Carbonaceous chondrite (CV3, oxidized subgroup)

Specimens: 21.18 g and a polished section at CEREGE. Main mass with Pierre-Marie Pelé

Bibliography:

Bonal L., Quirico E., Flandinet L., and Montagnac G. (2016) Thermal history of type 3 chondrites from the Antarctic meteorite collection determined by Raman spectroscopy of their polyaromatic carbonaceous matter. Geochim. Cosmochim. Acta 189 312-337. (link)

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	Rissani
Date:	P 2017 Mar
Mass (g):	105.52
Pieces:	1
Class:	CV3
Weathering grade:	moderate
Fayalite (mol%):	2.7±2.5 (n=6)
Ferrosilite (mol%):	4.9 (n=1)
Wollastonite (mol%):	0.9
Magnetic suscept.:	4.59
Classifier:	J. Gattacceca, L. Krämer Ruggiu, CEREGE
Type spec mass (g):	21.18
Type spec location:	CEREGE
Main mass:	Pierre-Marie Pelé
Comments:	Work name PM323; submitted by Lisa Kraemer Ruggiu

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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

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

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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