Meteoritical Bulletin: Entry for Northwest Africa 11291

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Northwest Africa 11291

Basic information

Name: Northwest Africa 11291
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11291
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 2.4 kg

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 31 May 2017

Writeup

Writeup from MB 106:

Northwest Africa 11291 (NWA 11291)

(Northwest Africa)

Purchased: 2015 Aug

Classification: Ordinary chondrite (LL3)

Physical characteristics: Stone has no fusion crust, brown color.

Petrography: Numerous chondrules, up to 4 mm in diameter. Metal is partially oxidized. Metal abundance ~2 vol%.

Geochemistry: Olivine 21.6±8.4 (N=10), FeO/MnO (molar) 54.1±19.1 (N=10), Pyroxene Fs_21.5±9.4Wo_3.3±3.7(N=10).

Classification: LL3

Specimens: 46.7 g including a thin section and probe mount at UWO. Main mass with S. Tutorow.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2015 Aug
Mass (g):	2398.2
Pieces:	218
Class:	LL3
Weathering grade:	W2
Fayalite (mol%):	21.6±8.4 (N=10)
Ferrosilite (mol%):	21.5±9.4 (N=10)
Wollastonite (mol%):	3.3±3.7 (N=10)
Classifier:	A. Bouvier (UWO)
Type spec mass (g):	46.7
Type spec location:	UWO
Main mass:	S. Tutorow
Comments:	Field name G637.; submitted by A. Bouvier (UWO)

Institutions
and collections

UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015)

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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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
An R•J
chen wang
Chunliang Zhang
FRANK THOMPSON
Ryan Upchurch