Meteoritical Bulletin: Entry for Northwest Africa 11074

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Northwest Africa 11074

Basic information

Name: Northwest Africa 11074
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11074
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 229 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	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 17 Feb 2017

Writeup

Writeup from MB 106:

Northwest Africa 11074 (NWA 11074)

(Northwest Africa)

Purchased: 2016 Nov

Classification: Ordinary chondrite (LL3)

History: Purchased by Darryl Pitt in November 2016 from a dealer in Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Fairly closely packed, well-formed chondrules (apparent diameter 450 ± 300 µm) are set in a fine grained matrix containing altered metal.

Geochemistry: Olivine (Fa_2.2-82.6, Cr₂O₃ in ferroan examples 0.07-0.52 wt.%, mean 0.18±0.17 wt.%, N = 7), orthopyroxene (Fs_1.1-33.8Wo_0.7-1.7, N = 3), clinopyroxene (Fs_4.0-32.4Wo_37.4-37.9, N = 2). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 3.61.

Classification: Ordinary chondrite (LL3).

Specimens: 20.1 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2016 Nov
Mass (g):	229.4
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	2.2-82.6
Ferrosilite (mol%):	1.1-33.8
Wollastonite (mol%):	0.7-1.7
Magnetic suscept.:	3.61
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	20.1
Type spec location:	UWB
Main mass:	DPitt
Comments:	MVCH 220; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)

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 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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