Meteoritical Bulletin: Entry for Northwest Africa 8484

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Northwest Africa 8484

Basic information

Name: Northwest Africa 8484
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8484
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 83.1 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	LL3
Recommended:			LL3 [explanation]

This is 1 of 487 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 26 Jul 2014

Writeup

help

Writeup from MB 103:

Northwest Africa 8484 (NWA 8484)

(Northwest Africa)

Purchased: 2014

Classification: Ordinary chondrite (LL3)

History: Purchased in Morocco in 2014.

Physical characteristics: A single stone with a grayish desert varnish. Cut surface reveals closely packed grayish and reddish chondrules up to 5 mm.

Petrography: (C. Cournède and J. Gattacceca, CEREGE) Closely packed chondrules. Chondrule mean apparent size 0.79±0.57 mm (N=40). Zoned olivines and pyroxenes.

Geochemistry: Olivine Fa_16.4±11.0(PMD=56%, n=24, range 0.6-41.8). Orthopyroxene Fs_9.2±5.5Wo_1.1±0.8(PMD=51%, n=9, range Fs_3.0-18.0). Cr₂O₃ in ferroan olivines 0.09±0.08 wt.% (n=22). Magnetic susceptibility log χ = 3.82 (χ in 10^-9 m³/kg).

Classification: LL3. LL classification based on magnetic susceptibility and chondrule size. Estimated sub-type between 3.2 and 3.5 based on Fa scatter and Cr₂O₃ content of olivine.

Specimens: 17 g and a polished section in CEREGE. Main mass with Pierre-Marie Pelé

Data from:
  MB103
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2014
Mass (g):	83.1
Pieces:	1
Class:	LL3
Weathering grade:	W3
Fayalite (mol%):	16.4±11 (PMD=56%, N=24)
Ferrosilite (mol%):	9.2±5.4 (PMD=51%, N=9)
Wollastonite (mol%):	1.1±0.8
Magnetic suscept.:	3.82
Classifier:	C. Cournède, J. Gattacceca, CEREGE
Type spec mass (g):	17
Type spec location:	CEREGE
Main mass:	Pierre-Marie Pelé
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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