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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:help 717 g
Classification
  history:
Recommended:  CK3    [explanation]

This is 1 of 48 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
Writeuphelp
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 (Fa26.6±11.0, range Fa4.8-36.5, N = 12), low-Ca pyroxene (Fs19.5±8.4Wo1.2±0.5, range Fs1.8-25.1Wo0.9-2.2, N = 7), augite (Fs16.3±2.2Wo48.4±1.6, range Fs14.7-18.8Wo46.7-49.9, 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7328 approved meteorites from (Northwest Africa) (plus 1973 unapproved names)

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