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Northwest Africa 13381
Basic information Name: Northwest Africa 13381
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13381
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 1335 g
Recommended:  CK3    [explanation]

This is 1 of 75 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 5 Sep 2020
Writeup from MB 109:

Northwest Africa 13381 (NWA 13381)

(Northwest Africa)

Purchased: 2020 Jun

Classification: Carbonaceous chondrite (CK3)

History: Purchased by Rachid Chaoui in June 2020 from a Mauritanian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Separated, granular, glass-bearing unequilibrated chondrules containing Cr-magnetite plus fine grained CAI are set in a relatively abundant fine grained matrix containing Cr-magnetite, troilite and pentlandite. Hedenbergite, spinel and ilmenite are present in one CAI.

Geochemistry: Olivine (Fa30.2±15.1, range Fa2.6-44.0, N = 9), low-Ca pyroxene (Fs2.0±1.3Wo2.2±2.2, range Fs0.8-3.4Wo4.6-0.4, N = 5), augite (Fs0.5Wo45.2), magnetite (Cr2O3 = 1.2 wt.%, 3.1 wt.%, N = 2).

Classification: Carbonaceous chondrite (CK3).

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

Data from:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2020 Jun
Mass (g):1335
Shock stage:S2
Weathering grade:low
Fayalite (mol%):30.2±15.1
Ferrosilite (mol%):2.0±1.3
Wollastonite (mol%):2.2±2.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.1
Type spec location:UWB
Main mass:R. Chaoui
Comments:Work name RC133.6; 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. 109, in preparation (2020)
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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