Meteoritical Bulletin: Entry for Northwest Africa 11194

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Northwest Africa 11194

Basic information

Name: Northwest Africa 11194
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11194
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 152 g

Classification
history:

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

This is 1 of 628 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 10 Apr 2017

Writeup

Writeup from MB 106:

Northwest Africa 11194 (NWA 11194)

(Northwest Africa)

Purchased: 2016 Nov

Classification: Carbonaceous chondrite (CO3)

History: Purchased by John Higgins in November 2016 from a dealer in Laayoune, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Relatively small chondrules (apparent diameter 200±100 μm), sparse CAI and angular mineral fragments are set in a fine grained matrix (~25 vol.%, deep brown in thin section).

Geochemistry: Olivine (Fa_0.3-72.2, Cr₂O₃ in ferroan examples 0.26-0.46 wt.%, N = 7), orthopyroxene (Fs_1.3-6.0Wo_0.9-2.4, N = 3), augite (Fs_7.2Wo_36.7), Al-Ti-diopside (Fs_0.3Wo_47.8, TiO₂ = 1.0 wt.%, Al₂O₃ = 4.1 wt.%).

Classification: Carbonaceous chondrite (CO3).

Specimens: 22.1 g including one polished thin section at UWB; remainder with Mr. J. Higgins.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Laayoune
Date:	P 2016 Nov
Mass (g):	152
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	0.3-72.2
Ferrosilite (mol%):	1.3-6.0
Wollastonite (mol%):	0.9-2.4
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	22.1
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH17-2; 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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