Meteoritical Bulletin: Entry for Northwest Africa 8473

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Northwest Africa 8473

Basic information

Name: Northwest Africa 8473
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8473
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 218 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	Eucrite-mmict
Recommended:			Eucrite-mmict [explanation]

This is 1 of 295 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 26 Jul 2014

Writeup

Writeup from MB 103:

Northwest Africa 8473 (NWA 8473)

(Northwest Africa)

Purchased: 2013 Jun

Classification: HED achondrite (Eucrite, monomict)

History: Purchased in 2013 in Zagora

Physical characteristics: Cut surface reveals a fresh light gray interior with a few clasts about 1 mm in size.

Petrography: (J. Gattacceca, CEREGE) Brecciated ophitic to subophitic basalt with grain size 500 μm to 1 mm. Mineralogy: pyroxene, plagioclase, accessory ilmenite, silica, chromite, troilite, rare metal.

Geochemistry: Orthopyroxene Fs_58.2-62.4Wo_7.6-1.7, FeO/MnO = 35.0, n=6. Plagioclase An_86.7Or_0.8range An_77.7-92.8Or_1.7-0.1), n=5. Magnetic susceptibility log χ = 2.82 (χ in 10^-9 m³/kg).

Classification: Achondrite (basaltic monomict eucrite). Strong weathering.

Specimens: 21 g in CEREGE, main mass with Labenne

Data from:
  MB103
  Table 0
  Line 0:

Place of purchase:	Zagora
Date:	P 2013 Jun
Mass (g):	218
Pieces:	1
Class:	Eucrite-mmict
Weathering grade:	high
Ferrosilite (mol%):	58.2-62.4
Wollastonite (mol%):	7.6-1.7
Magnetic suscept.:	2.82
Classifier:	J. Gattacceca and M. Aboulahris, CEREGE
Type spec mass (g):	21
Type spec location:	CEREGE
Main mass:	Luc Labenne
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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)

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 9933 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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