Meteoritical Bulletin: Entry for Northwest Africa 10126

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Northwest Africa 10126

Basic information

Name: Northwest Africa 10126
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10126
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 17.6 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	CM2
Recommended:			CM2 [explanation]

This is 1 of 636 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Comments:

Approved 9 May 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 10126 (NWA 10126)

(Northwest Africa)

Purchased: 2013 Dec

Classification: Carbonaceous chondrite (CM2)

History: Purchased by Gary Fujihara in December 2013 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Very small, well-formed chondrules together with angular mineral fragments and amoeboid, very fine grained CAI are set in a finer grained matrix (deep reddish brown in thin section) containing pyrrhotite and cronstedtite-tochilinite.

Geochemistry: Olivine (Fa_0.4-40.6, Cr₂O₃ in ferroan examples 0.08-0.43 wt.%, N = 7), orthopyroxene (Fs_1.6-7.5Wo_0.9-2.2, N =2), subcalcic augite (Fs_39.2Wo_31.3), diopside (Fs_1.0Wo_42.1). Oxygen isotopic composition (J. Gattacceca, C. Sonzogni, CEREGE) from analysis of one 1.5 mg aliquot of a powdered 20 mg bulk sample is δ¹⁷O=1.73‰, δ¹⁸O=7.78‰ , Δ¹⁷O=-2.33‰ (linearized, slope 0.5247, analytical uncertainties 0.08‰, 0.12‰, 0.03‰ respectively).

Classification: Carbonaceous chondrite (CM2).

Specimens: 3.52 g including one polished thin section at UWB. The remainder is held by Mr. G. Fujihara.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2013 Dec
Mass (g):	17.6
Pieces:	1
Class:	CM2
Shock stage:	S2
Weathering grade:	moderate
Fayalite (mol%):	0.4-40.6
Ferrosilite (mol%):	1.6-7.5
Wollastonite (mol%):	0.9-2.2
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	3.52
Type spec location:	UWB
Main mass:	G. Fujihara
Comments:	GF15-1; submitted by A. Irving

Plots:

O isotopes:

Institutions
and collections

CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)
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 Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

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Geography:

Coordinates:

Unknown.

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

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Revision
history:

This lists important revisions made to data for this record.

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