Meteoritical Bulletin: Entry for Northwest Africa 13246

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Northwest Africa 13246

Basic information

Name: Northwest Africa 13246
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13246
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 717 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2021)	CK3
Recommended:			CK3 [explanation]

This is 1 of 91 approved meteorites classified as CK3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites

Comments:

Approved 27 Jun 2020

Writeup

Writeup from MB 109:

Northwest Africa 13246 (NWA 13246)

(Northwest Africa)

Purchased: 2019 Nov

Classification: Carbonaceous chondrite (CK3)

History: Purchased by Fabien Kuntz in November 2019 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Separated, well-formed chondrules (apparent diameter 650±290 μm, N = 23) and CAIs are set in a fine-grained matrix (~80 vol.%) containing abundant Cr-magnetite (stained orange by secondary alteration).

Geochemistry: Olivine (Fa_26.6±11.0, range Fa_4.8-36.5, N = 12), low-Ca pyroxene (Fs_19.5±8.4Wo_1.2±0.5, range Fs_1.8-25.1Wo_0.9-2.2, N = 7), augite (Fs_16.3±2.2Wo_48.4±1.6, range Fs_14.7-18.8Wo_46.7-49.9, N = 3), magnetite (Cr₂O₃ = 3.4 wt.%).

Classification: Carbonaceous chondrite (CK3).

Specimens: 20.9 g including one polished thin section at UWB; remainder with Kuntz.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Zagora
Date:	P 2019 Nov
Mass (g):	717
Pieces:	1
Class:	CK3
Shock stage:	S2
Weathering grade:	moderate
Fayalite (mol%):	26.8±11.2
Ferrosilite (mol%):	19.5±8.4
Wollastonite (mol%):	1.2±0.5
Classifier:	A. Irving, UWS, and P. Carpenter, WUSTL
Type spec mass (g):	20.9
Type spec location:	UWB
Main mass:	F. Kuntz
Comments:	Work name K444; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.

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Photos:

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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