Meteoritical Bulletin: Entry for Northwest Africa 13397

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Northwest Africa 13397

Basic information

Name: Northwest Africa 13397
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13397
Observed fall: No
Year found: 2019
Country: Morocco
Mass: 720 g

Classification
history:

Recommended:

LL3 [explanation]

This is 1 of 452 approved meteorites classified as LL3. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 8 Aug 2020

Writeup

Writeup from MB 109:

Northwest Africa 13397 (NWA 13397)

Morocco

Find: 2019

Classification: Ordinary chondrite (LL3)

Petrography: (J. Gattacceca, CEREGE) Chondrite with well-delineated packed chondrules (average apparent diameter 940±430 μm, n=27). Opaques are Fe,Ni metal and troilite.

Geochemistry: Olivine Fa_18.9±7.5, range Fa_3.3-25.8, Fa PMD 35%, Cr₂O₃ 0.33±0.07 (n=10). Low-Ca pyroxene Fs_14.4±7.9Wo_0.9±0.7(n=6).

Classification: Ordinary chondrite (LL3). LL group based on chondrule size and magnetic susceptibility.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	2019
Mass (g):	720
Pieces:	1
Class:	LL3
Weathering grade:	W2
Fayalite (mol%):	18.9±7.5 (n=10)
Ferrosilite (mol%):	14.4±7.9 (n=6)
Wollastonite (mol%):	0.9±0.7
Magnetic suscept.:	4.37
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	22
Type spec location:	CEREGE
Main mass:	anonymous
Finder:	anonymous
Comments:	work name MZ38; 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)

Find references in NASA ADS:
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Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 1973 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater)

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