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Northwest Africa 15337
Basic information Name: Northwest Africa 15337
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15337
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 320 g
Recommended:  CK3    [explanation]

This is 1 of 79 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 22 Oct 2022
Writeup from MB 111:

Northwest Africa 15337 (NWA 15337)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CK3)

History: Purchased by Craig Zlimen in 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed unequilibrated chondrules (apparent diameter 950±260 μm, N = 26) containing Cr-magnetite are set in a fine grained matrix containing Cr-magnetite and pentlandite. Some augite grains are intergrown with calcite. A few very fine-grained CAI are present in the studied thin section.

Geochemistry: Olivine (Fa21.3±12.0, range Fa0.3-35.1, N = 7), augite (Fs14.4±5.8Wo48.3±2.9, range Fs8.0-19.5Wo44.9-50.1, N = 3), low-Ca pyroxene (Fs5.50±6.1Wo5.2±1.0, range Fs0.9-12.4Wo4.5-6.4, N = 3), Al-Ti-diopside in CAI (Fs1.5Wo47.5, Al2O3 12.0 wt.%, TiO2 1.2 wt.%), plagioclase (Ab52.9An45.9Or1.2; Ab70.5An26.7Or2.8; N = 2), magnetite (Cr2O3 2.7-3.3 wt.%, N = 4).

Classification: Carbonaceous chondrite (CK3).

Specimens: 29 g including one polished thin section at UWB; remainder with Mr. C. Zlimen.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021
Mass (g):320
Shock stage:S2
Weathering grade:low
Fayalite (mol%):21.38±12.0
Ferrosilite (mol%):14.4±5.8; 5.5±6.1
Wollastonite (mol%):48.3±2.9; 5.2±1.0
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):29
Type spec location:UWB
Main mass:C. Zlimen
Comments:Work name ZLI 074; submitted by A. Irving
   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)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 9370 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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