Meteoritical Bulletin: Entry for Northwest Africa 11566

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Northwest Africa 11566

Basic information

Name: Northwest Africa 11566
This is NOT an official name: Discredited meteorite.
Abbreviation: NWA 11566
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 135 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	L6
Recommended:			L6 [explanation]

Comments:

Entered 18 Dec 2017
Revised 11 Jun 2019: Same meteorite as NWA 11359

Writeup

Writeup from MB 106:

Northwest Africa 11566 (NWA 11566)

(Northwest Africa)

Purchased: 2016

Classification: Ordinary chondrite (L6)

History: The stone was purchased by Mohamed salem El Wali El alaoui.

Physical characteristics: The stone is unusually porous. It contains 5-10 vol.% pores with diameters ranging from 50 - 250 µm.

Petrography: The stone is very recrystallized and has poorly defined chondrules. Plagiolcase grains range up to 50x120 µm. Diopside is more abundant than low-Ca pyroxene. Diopside compositions average Fs_7.3±0.4Wo_45.0±0.5(n=15). Plagioclase compositions average Ab_82.9±1.0Or_5.7±0.9(n=10). The rock appears to have relict shock features including small, irregular troiltie grains within metallic Fe-Ni, chromite-plagioclase assemblages and chromite veinlets. Olivine grains exhibit undulose extinction.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2016
Mass (g):	135
Pieces:	1
Class:	L6
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	23.3±0.2 (n=11)
Ferrosilite (mol%):	19.9±0.2 (n=3)
Wollastonite (mol%):	1.5±0.2 (n=3)
Classifier:	A. Rubin, UCLA
Type spec mass (g):	21
Type spec location:	UCLA
Main mass:	with owner: Mohamed salem El Wali El alaoui
Comments:	Submitted by Alan Rubin

Institutions
and collections

UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 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.

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Revision
history:

This lists important revisions made to data for this record.

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