Meteoritical Bulletin: Entry for Northwest Africa 13504

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Northwest Africa 13504

Basic information

Name: Northwest Africa 13504
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13504
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 74.1 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	L3.10
Recommended:			L3.10 [explanation]

This is 1 of 10 approved meteorites classified as L3.10. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 14 Nov 2020

Writeup

Writeup from MB 109:

Northwest Africa 13504 (NWA 13504)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Ordinary chondrite (L3.10)

History: Bought from a dealer from northwest Africa.

Physical characteristics: Single oriented stone.

Petrography: (J. Gattacceca, CEREGE) Chondrite with packed large and well-delineated chondrules (average apparent diameter 730±340 μm, n=43). Opaque minerals are metal and troilite.

Geochemistry: Olivine Fa_20.2±14.3, Fa PMD = 61% (n=15), Cr₂O₃ in ferroan olivine 0.28±0.21 wt% (n=14). Low-Ca pyroxene Fs_14.3±9.9Wo_2.0±2.1(n=16).

Classification: Ordinary chondrite L3.10. Likely L group based on magnetic susceptibility interpreted in the light of weathering grade and chondrule size. Subtype based on Cr₂O₃ content of ferroan olivine.

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Munich, Germany
Date:	P 2019 Oct
Mass (g):	74.1
Pieces:	1
Class:	L3.10
Weathering grade:	W3
Fayalite (mol%):	20.2±14.3 (n=15)
Ferrosilite (mol%):	14.3±9.9 (n=16)
Wollastonite (mol%):	2.0±2.1
Magnetic suscept.:	4.24
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	17.6
Type spec location:	CEREGE
Main mass:	Kuntz
Comments:	work name K472; 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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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Chunliang Zhang

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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