Meteoritical Bulletin: Entry for Northwest Africa 11056

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Northwest Africa 11056

Basic information

Name: Northwest Africa 11056
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11056
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 289 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	LL3
Recommended:			LL3 [explanation]

This is 1 of 365 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 15 Jun 2017

Writeup

Writeup from MB 106:

Northwest Africa 11056 (NWA 11056)

(Northwest Africa)

Purchased: 2016 Oct

Classification: Ordinary chondrite (LL3)

History: Purchased by John Higgins in October 2016 from a dealer in Nouakchott, Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Fairly closely packed, well-formed chondrules (apparent diameter 500±300 μm) are set in a sparse, fine-grained matrix containing altered metal.

Geochemistry: Olivine (Fa_0.4-47.3, Cr₂O₃ in ferroan examples 0.05-0.11 wt.%, mean 0.08±0.03 wt.%, N = 7), orthopyroxene (Fs_2.5-22.7Wo_0.2-2.2, N = 3), pigeonite (Fs_31.0Wo_16.8), augite (Fs_11.2Wo_45.3). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 3.73.

Classification: Ordinary chondrite (LL3).

Specimens: 23.95 g including one polished thin section at UWB; remainder with Mr. J. Higgins.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Nouakchott, Mauritania
Date:	P 2016 Oct
Mass (g):	289
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	0.4-47.3
Ferrosilite (mol%):	2.5-22.7
Wollastonite (mol%):	0.2-2.2
Magnetic suscept.:	3.73
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	23.95
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH16-14; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

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 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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