Meteoritical Bulletin: Entry for Northwest Africa 11256

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Northwest Africa 11256

Basic information

Name: Northwest Africa 11256
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11256
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 560 g

Classification
history:

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

This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 9 Jun 2017

Writeup

Writeup from MB 106:

Northwest Africa 11256 (NWA 11256)

(Northwest Africa)

Purchased: 2016 Oct

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Dustin Dickens in October 2016 from a dealer in Laayoune, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Ellipsoid-shaped granular chondrules (apparent diameter 900±600 μm) and irregularly shaped, fine-grained CAI are set in a fine-grained matrix (~35 vol.%, sepia brown in thin section) containing rare Zr-Pt-bearing nuggets. The long axes of chondrules show preferred orientation.

Geochemistry: Olivine (Fa_0.2-61.8, N = 3), orthopyroxene (Fs_0.9-1.3Wo_1.1-1.2, N = 3), clinopyroxene (Fs_0.6Wo_34.6; Fs_1.1Wo_37.4; N = 2).

Classification: Carbonaceous chondrite (CV3). Probably paired with NWA 11265.

Specimens: 32.2 g including one polished thin section at UWB; remainder with Mr. D. Dickens.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Laayoune
Date:	P 2016 Oct
Mass (g):	560
Pieces:	1
Class:	CV3
Shock stage:	S2
Weathering grade:	low
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	32.2
Type spec location:	UWB
Main mass:	D. Dickens
Comments:	Work name DD17-7; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

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Revision
history:

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