Meteoritical Bulletin: Entry for Northwest Africa 11335

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Northwest Africa 11335

Basic information

Name: Northwest Africa 11335
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11335
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 358 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	CO3
Recommended:			CO3 [explanation]

This is 1 of 623 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 28 Nov 2017

Writeup

Writeup from MB 106:

Northwest Africa 11335 (NWA 11335)

(Northwest Africa)

Purchased: 2016 June

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Ben Hoefnagels in June 2016 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Relatively small chondrules (apparent diameter 600±400 μm, N = 10), angular mineral fragments and some very fine grained CAI occur in a fine grained matrix (~40 vol.%, sepia brown in thin section).

Geochemistry: Olivine (Fa_0.2-82.5, Cr₂O₃ in ferroan examples 0.12-0.31 wt.%), orthopyroxene (Fs_0.7-1.1Wo_0.7-3.3, N = 3), subcalcic augite (Fs_0.6Wo_29.2), augite (Fs_0.8Wo_36.4).

Classification: Carbonaceous chondrite (CO3). Chondrules are larger than in typical CO3.

Specimens: 20.3 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2016 June
Mass (g):	358
Pieces:	many
Class:	CO3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	0.2-82.5
Ferrosilite (mol%):	0.7-1.1
Wollastonite (mol%):	0.7-3.3
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	20.5
Type spec location:	UWB
Main mass:	B. Hoefnagels
Comments:	Work name BH081; 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 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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