Meteoritical Bulletin: Entry for Northwest Africa 10264

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Northwest Africa 10264

Basic information

Name: Northwest Africa 10264
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10264
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 181 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	LL(L)3
Recommended:			LL(L)3 [explanation]

This is 1 of 22 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 22 Oct 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 10264 (NWA 10264)

(Northwest Africa)

Purchased: 2015 Feb

Classification: Ordinary chondrite (LL(L)3)

History: Purchased by Gary Fujihara in February 2015 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Closely packed, well-formed chondrules (apparent diameter up to 2.7 mm) are set in a sparse, finer grained matrix containing altered metal. Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.38.

Geochemistry: Olivine (Fa_0.8-67.0; Cr₂O₃ in ferroan examples = 0.15-0.28 wt.%, mean 0.22±0.05 wt.%, N = 6), orthopyroxene (Fs_1.7-6.5Wo_0.5-0.6, N = 3), subcalcic augite (Fs_6.6Wo_24.0), augite (Fs_1.2Wo_38.3).

Classification: Ordinary chondrite LL(L)3. The range in Fa content in olivine and the Cr₂O₃ contents in ferroan olivine are consistent with a relatively low subtype (estimated to be 3.3 to 3.4).

Specimens: 20.4 g including one polished thin section at UWB; main mass with Mr. G. Fujihara.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2015 Feb
Mass (g):	181
Pieces:	many
Class:	LL(L)3
Shock stage:	S2
Weathering grade:	W2/3
Fayalite (mol%):	0.8-67.0
Ferrosilite (mol%):	1.7-6.5
Wollastonite (mol%):	0.5-0.6
Magnetic suscept.:	4.38
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	20.4
Type spec location:	UWB
Main mass:	G. Fujihara
Comments:	GF15-3; 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 Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
METEORITICON

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7547 approved meteorites from (Northwest Africa) (plus 1970 unapproved names)

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