Meteoritical Bulletin: Entry for Northwest Africa 11158

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Northwest Africa 11158

Basic information

Name: Northwest Africa 11158
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11158
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 17.1 g

Classification
history:

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

This is 1 of 258 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 4 Mar 2017

Writeup

Writeup from MB 106:

Northwest Africa 11158 (NWA 11158)

(Northwest Africa)

Purchased: 2015

Classification: HED achondrite (Eucrite, monomict)

History: The meteorite was bought in 2016 from a Moroccan meteorite dealer at a mineral fair in Munich, Germany.

Physical characteristics: Small individual almost completely covered by fusion crust.

Petrography: Monomict eucrite displaying a fine-grained basaltic texture dominantly composed of exsolved pyroxene and up to 1 mm sized calcic plagioclase laths. Minor phases include silica, ilmenite, chromite, pyrrhotite and metallic iron. The meteorite contains shock melt veins.

Geochemistry: low-Ca pyroxene: Fs_60.7±1.5Wo_4.3±1.8(Fs_58.3-62.9Wo_2.3-7.5, n=13, FeO/MnO=30-33); Ca-pyroxene: Fs_32.3±1.0Wo_39.2±0.7(Fs_30.1-33.4Wo_38.5-40.8, n=13, FeO/MnO=29-34); calcic plagioclase: An_88.2±0.8(An_87.0-89.6, n=14)

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Munich, Germany
Date:	P 2015
Mass (g):	17.1
Pieces:	1
Class:	Eucrite-mmict
Shock stage:	moderate
Weathering grade:	low
Ferrosilite (mol%):	60.7; 32.3
Wollastonite (mol%):	4.3; 39.2
Classifier:	A. Greshake, MNB
Type spec mass (g):	3.5
Type spec location:	MNB
Main mass:	Ralph Sporn
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

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 8394 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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