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Northwest Africa 14145
Basic information Name: Northwest Africa 14145
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14145
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 170 g
Recommended:  CK4    [explanation]

This is 1 of 117 approved meteorites classified as CK4.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 31 Aug 2021
Writeup from MB 110:

Northwest Africa 14145 (NWA 14145)

(Northwest Africa)

Purchased: 2020 Oct

Classification: Carbonaceous chondrite (CK4)

History: Purchased by Luc Labenne in October 2020 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Separated well-formed, equilibrated magnetite-bearing chondrules are set in a fine grained matrix containing Cr-magnetite and intermediate plagioclase. Magnetite contains ilmenite exsolution lamellae and inclusions of pentlandite.

Geochemistry: Olivine (Fa33.5±0.1, range Fa33.4-33.6, N = 5), low-Ca pyroxene (Fs28.3±1.4Wo0.6±0.1, range Fs26.8-29.5Wo0.5-0.7, N = 3), augite (Fs12.5±7.1Wo48.8±0.8, range Fs7.4-17.5Wo48.2-49.3, N = 2), plagioclase (An29.6-39.2Or6.4-4.0, N = 2), magnetite (Cr2O3 4.8-5.1 wt.%, N = 3).

Classification: Carbonaceous chondrite (CK4).

Specimens: 20.6 g including one polished thin section at UWB; remainder with Labenne.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020 Oct
Mass (g):170
Shock stage:S2
Weathering grade:low
Fayalite (mol%):33.5±0.1
Ferrosilite (mol%):28.3±1.4
Wollastonite (mol%):0.6±0.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.6
Type spec location:UWB
Main mass:Labenne
Comments:Work name LAB21-11; 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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 8420 approved meteorites from (Northwest Africa) (plus 1900 unapproved names)

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