Meteoritical Bulletin: Entry for Northwest Africa 11813

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Northwest Africa 11813

Basic information

Name: Northwest Africa 11813
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11813
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 25.3 g

Classification
history:

Meteoritical Bulletin:	MB 107	(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 May 2018

Writeup

Writeup from MB 107:

Northwest Africa 11813 (NWA 11813)

(Northwest Africa)

Purchased: 2017

Classification: Ordinary chondrite (LL3)

Physical characteristics: Greyish stone. Cut surface reveals a dark grey interior with closely packed well-defined chondrules.

Petrography: (J. Gattacceca, H. Pourkhorsandi, CEREGE) Packed chondrules with average apparent diameter 920 μm (N=36).

Geochemistry: Olivine Fa_18.2±8.1, range 1.1-33.8, PMD 33% (N=13), Cr₂O₃ in ferroan olivine 0.17±0.12 wt% (N=11). Orthopyroxene Fs_8.0±4.1Wo_2.3±1.8(N=4).

Classification: LL3. LL than L classification from magnetic susceptibility.

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

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Ensisheim
Date:	P 2017
Mass (g):	25.3
Pieces:	1
Class:	LL3
Weathering grade:	W3
Fayalite (mol%):	18.2±8.1 (N=13)
Ferrosilite (mol%):	8.0±4.1 (N=4)
Wollastonite (mol%):	2.3±1.8
Magnetic suscept.:	3.51
Classifier:	J. Gattacceca, H. Pourkhorsandi, CEREGE
Type spec mass (g):	5.15
Type spec location:	CEREGE
Main mass:	Kuntz
Comments:	work name K368; submitted by J. 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. 107, MAPS 55, 460-462

Find references in NASA ADS:
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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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