Meteoritical Bulletin: Entry for Northwest Africa 11028

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Northwest Africa 11028

Basic information

Name: Northwest Africa 11028
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11028
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 188.2 g

Classification
history:

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

This is 1 of 645 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 26 Jan 2017

Writeup

Writeup from MB 106:

Northwest Africa 11028 (NWA 11028)

(Northwest Africa)

Purchased: 2016 Jun

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Fabien Kuntz in June 2016 from a dealer in Tan Tan, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, small chondrules (apparent diameter 250±150 μm) together with angular mineral grains and sparse, small CAI and AOA are set in a fine grained matrix (~30 vol.%, deep reddish-brown in thin section).

Geochemistry: Olivine (Fa_0.4-73.1, Cr₂O₃ in ferroan examples 0.10-0.56 wt.%, mean 0.19±0.18 wt.%, N = 7), orthopyroxene (Fs_0.9Wo_1.7; Fs_59.5Wo_4.2; N = 2), clinopyroxene (Fs_2.3Wo_44.2; Fs_4.6Wo_35.6).

Classification: Carbonaceous chondrite (CO3).

Specimens: 21.06 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Tan Tan
Date:	P 2016 Jun
Mass (g):	188.2
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	moderate
Fayalite (mol%):	0.4-73.1
Ferrosilite (mol%):	0.9-59.5
Wollastonite (mol%):	1.7-4.2
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21.06
Type spec location:	PSF
Main mass:	F. Kuntz
Comments:	K307; submitted by A. Irving

Institutions
and collections

PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Kuntz: Fabien Kuntz, France; 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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Photos:

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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