Meteoritical Bulletin: Entry for Northwest Africa 11265

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Northwest Africa 11265

Basic information

Name: Northwest Africa 11265
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11265
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 1502 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	CV3
Recommended:			CV3 [explanation]

This is 1 of 605 approved meteorites (plus 1 unapproved name) classified as CV3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 28 Nov 2017

Writeup

Writeup from MB 106:

Northwest Africa 11265 (NWA 11265)

(Northwest Africa)

Purchased: 2017 Jan

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Martin Goff in January 2017 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Ellipsoid-shaped granular chondrules (apparent diameter 730±500 µm, N=38) and elongate CAI (both showing preferred orientation) are set in a fine grained, fractured matrix (~45 vol.%, sepia brown in thin section). One CAI contains the assemblage corundum+gehlenite+spinel+perovskite.

Geochemistry: Olivine (Fa_1.7-48.2, N = 3), orthopyroxene (Fs_0.5-1.0Wo_1.0-0.7, N = 3), subcalcic augite (Fs_3.3Wo_32.1; Fs_15.5Wo_25.3; N = 2)

Classification: Carbonaceous chondrite (CV3). Chondrule size and matrix abundance are slightly anomalous features. Probably paired with NWA 11256.

Specimens: 59.1 g including one polished thin section and one polished mount at UWB; remainder with Mr. M. Goff.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2017 Jan
Mass (g):	1502
Pieces:	4
Class:	CV3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	1.7-48.2
Ferrosilite (mol%):	0.5-1.0
Wollastonite (mol%):	1.0-0.7
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	59.1
Type spec location:	UWB
Main mass:	M. Goff
Comments:	Work name MG17-1; 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 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
Public domain photographs:
A. Irving

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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