Meteoritical Bulletin: Entry for Northwest Africa 11076

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Northwest Africa 11076

Basic information

Name: Northwest Africa 11076
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11076
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 58.3 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	LL(L)3
Recommended:			LL(L)3 [explanation]

This is 1 of 23 approved meteorites classified as LL(L)3. [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 11076 (NWA 11076)

(Northwest Africa)

Purchased: 2016 Nov

Classification: Ordinary chondrite (LL(L)3)

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 500±400 μm) are set in a fine grained matrix containing altered metal.

Geochemistry: Olivine (Fa_2.6-76.8, Cr₂O₃ in ferroan examples 0.05-0.14 wt.%, mean 0.09±0.03 wt.%, N = 7), orthopyroxene (Fs_1.0-17.0Wo_0.9-1.3, N = 3), diopside (Fs_0.9Wo_35.8), subcalcic augite (Fs_17.4Wo_29.5). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.22.

Classification: Ordinary chondrite (LL(L)3).

Specimens: 11.7 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):	58.3
Pieces:	1
Class:	LL(L)3
Shock stage:	S2
Weathering grade:	W1/2
Fayalite (mol%):	2.6-76.8
Ferrosilite (mol%):	1.0-17.0
Wollastonite (mol%):	0.9-1.3
Magnetic suscept.:	4.22
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	11.7
Type spec location:	UWB
Main mass:	DPitt
Comments:	MVCH 224; 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)
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 7688 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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