Meteoritical Bulletin: Entry for Northwest Africa 8689

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Northwest Africa 8689

Basic information

Name: Northwest Africa 8689
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8689
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 106 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	L3
Recommended:			L3 [explanation]

This is 1 of 848 approved meteorites (plus 2 unapproved names) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 28 Dec 2014

Writeup

Writeup from MB 103:

Northwest Africa 8689 (NWA 8689)

(Northwest Africa)

Purchased: 2014 June 21

Classification: Ordinary chondrite (L3)

History: The stone was bought by R. Lenssen in June 2014 in Ensisheim, France.

Physical characteristics: A single round crusted stone. Cut surface reveals closely packed, well delineated chondrules in a light brown matrix.

Petrography: Well delineated chondrules set in a partially recrystallized matrix. Chondrule average apparent diameter 730±370 μm (N=39). Chondrule mesostasis is devitrified. Olivines are zoned.

Geochemistry: Olivine Fa_23.5±7.8(Fa_6.4-32.2, PMD 29%, N=15). Low-Ca pyroxene Fs_16.8±8.9Wo_1.1±1.2(Fs_1.3-32.3, PMD=49, n=19). Cr₂O₃ in ferroan olivine 0.21±0.31 wt% (N=15)

Classification: L group from chondrule size and magnetic susceptibility (interpreted in the light of weathering grade).

Specimens: 32 g at CEREGE. Main mass with R. Lenssen

Data from:
  MB103
  Table 0
  Line 0:

Place of purchase:	Ensisheim
Date:	P 2014 June 21
Mass (g):	106
Pieces:	1
Class:	L3
Weathering grade:	W4
Fayalite (mol%):	23.5±7.8 (N=15)
Ferrosilite (mol%):	16.8±8.9 (N=19)
Wollastonite (mol%):	1.1±1.2
Magnetic suscept.:	3.83
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	32
Type spec location:	CEREGE
Main mass:	R. Lenssen
Comments:	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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full

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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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