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Northwest Africa 14559
Basic information Name: Northwest Africa 14559
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14559
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 130 g
Recommended:  CK3    [explanation]

This is 1 of 74 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 12 Feb 2022
Writeup from MB 111:

Northwest Africa 14559 (NWA 14559)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CK3)

History: Puchased by Nicholas Gessler in 2021 from a Moroccan dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Discrete well-formed unequilibrated chondrules, distinct Type 3 lithic chondrite clasts, and rare fine-grained AOA are set in a fine-grained matrix (~50 vol.%) containing Cr-magnetite (extensively altered to deep red-brown hydroxides), chlorapatite, and minor pentlandite. The studied thin section also contains a fine grained lithic clast (mean grainsize ~100 µm) with protogranular texture composed mainly of compositionally-zoned olivine and unzoned augite together with labradoritic plagioclase and accessory Cr-magnetite.

Geochemistry: Olivine in discrete chondrules and Type 3 lithic clasts (Fa27.8±7.0, range Fa19.7-37.4, N = 8), low-Ca pyroxene (Fs4.1Wo0.8), subcalcic augite (Fs17.9Wo22.2), augite (Fs13.3Wo48.3), plagioclase (An26.8-39.3Or3.3-1.7, N = 3), magnetite (Cr2O3 2.7-6.6 wt.%, N = 11). Protogranular clast: olivine (Fa31.6±10.2, range Fa6.5-37.8, N = 9), augite (Fs14.4±0.3Wo47.9±0.1, range Fs14.2-14.8Wo48.0-47.8, N = 3), plagioclase (An54.2Or2.1).

Classification: Carbonaceous chondrite (CK3).

Specimens: 22.5 g plus one polished thin section at UWB; remainder with Mr. N. Gessler.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):130
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):27.8±7.0
Ferrosilite (mol%):4.1; 17.9; 13.3
Wollastonite (mol%):0.8; 22.2; 48.3
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):22.5
Type spec location:UWB
Main mass:N. Gessler
Comments:Work name NG-DS; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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