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Northwest Africa 15424
Basic information Name: Northwest Africa 15424
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15424
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 943 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  CK5
Recommended:  CK5    [explanation]

This is 1 of 215 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 11 Dec 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15424 (NWA 15424)

(Northwest Africa)

Purchased: 2022

Classification: Carbonaceous chondrite (CK5)

History: Purchased by Nicholas Gessler in 2022 from a Moroccan dealer.

Physical characteristics: A sub-round, flat oval oriented stone (943 g) ~95% covered by fusion crust.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Sparse well-formed, equilibrated chondrules containing Cr-magnetite are set in a fine grained matrix containing stained Cr-magnetite, ilmenite, augite, chlorapatite and very minor troilite.

Geochemistry: Olivine (Fa30.7±0.4, range Fa30.3-31.6, N = 11), low-Ca pyroxene (Fs25.7±0.2Wo0.6±0.1, range Fs25.5-25.9Wo0.6-0.8, N = 9), augite (Fs10.0±1.3Wo45.4±0.9, range Fs8.5-11.2Wo46.7-44.4, N = 4), plagioclase (An33.1Or3.4; An56.5-59.5Or1.1-1.2; N = 4), magnetite (Cr2O3 4.1-4.5 wt.%, N = 7).

Classification: Carbonaceous chondrite (CK5).

Specimens: 21.5 g plus one polished thin section at UWB; remainder with Mr. N. Gessler.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2022
Mass (g):943
Pieces:1
Class:CK5
Shock stage:S2
Weathering grade:low
Fayalite (mol%):30.7±0.4
Ferrosilite (mol%):25.7±0.2
Wollastonite (mol%):0.6±0.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):21.5
Type spec location:UWB
Main mass:N. Gessler
Comments:Work name NG-FX; 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)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
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Revision
  history:
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