Meteoritical Bulletin: Entry for Northwest Africa 11538

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Northwest Africa 11538

Basic information

Name: Northwest Africa 11538
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11538
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 89.1 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	LL3
Recommended:			LL3 [explanation]

This is 1 of 507 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 11 Dec 2017

Writeup

Writeup from MB 106:

Northwest Africa 11538 (NWA 11538)

(Northwest Africa)

Purchased: 2017

Classification: Ordinary chondrite (LL3)

Physical characteristics: Brownish stone. Cut surface reveals well defined, closely packed chondrules. A 5 mm fine-grained dark clast is visible.

Petrography: (J. Gattacceca, H. Pourkhorsandi, CEREGE) Unequilibrated ordinary chondrite. Chondrule mesostasis is devitrified. Olivines are zoned.

Geochemistry: Olivine Fa_7.6±7.1, range 1.0-16.9, PMD 91% (N=5), Cr₂O₃ in ferroan olivine 0.14±0.10 wt% (N=3). Orthopyroxene Fs_18.1±8.2Wo_1.0±0.2(N=3).

Classification: LL3

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

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2017
Mass (g):	89.1
Pieces:	1
Class:	LL3
Weathering grade:	W3
Magnetic suscept.:	3.48
Classifier:	J. Gattacceca, H. Pourkhorsandi, CEREGE
Type spec mass (g):	19.07
Type spec location:	CEREGE
Main mass:	Kuntz
Comments:	work name K341; 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., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9921 approved meteorites from (Northwest Africa) (plus 1838 unapproved names)

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