Meteoritical Bulletin: Entry for Northwest Africa 11084

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Northwest Africa 11084

Basic information

Name: Northwest Africa 11084
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11084
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 37 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	Eucrite-unbr
Recommended:			Eucrite-unbr [explanation]

This is 1 of 119 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 14 Feb 2017

Writeup

Writeup from MB 106:

Northwest Africa 11084 (NWA 11084)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, unbrecciated)

Physical characteristics: Very fresh thin fusion crust. Cut surface reveals light-gray, fine-grained homogeneous interior.

Petrography: Unbrecciated basaltic rock with ophitic teture. Main minerals are exsolved pyroxenes and plagiocalse, with average grain size 500 μm. Accessory minerals: ilmenite, chromite. Rare metal.

Geochemistry: Low Ca-pyroxene Fs_62.8±0.2Wo_2.6±0.6, FeO/MnO=32.0 (N=2). Augite exsolution Fs_29.4Wo_41.4(N=1). Plagioclase An_82.3±1.8Ab_16.9±1.5Or_0.8±0.3(N=2). Chromite Cr/(Cr+Al)=0.85.

Classification: Eucrite, unbrecciated. Almost no weathering.

Specimens: 7.4 g at CEREGE.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Zagora, Morocco
Date:	P 2016
Mass (g):	37
Pieces:	1
Class:	eucrite-unbr
Weathering grade:	minimal
Ferrosilite (mol%):	62.8±0.2 (N=2)
Wollastonite (mol%):	2.6±0.6
Magnetic suscept.:	2.70
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	7.42
Type spec location:	CEREGE
Main mass:	ArtMet collection, Poland
Finder:	anonymous
Comments:	work name F01-LM14; 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 29 Oct 2018)
ARTMET: Meteorites and Art, Poland (private address; updated 23 Feb 2018)

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 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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