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Northwest Africa 15319
Basic information Name: Northwest Africa 15319
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15319
Observed fall: No
Year found: 2022
Country: Mauritania
Mass:help 1013 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  CK4
Recommended:  CK4    [explanation]

This is 1 of 128 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 22 Oct 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15319 (NWA 15319)

Mauritania

Purchased: 2022 Apr

Classification: Carbonaceous chondrite (CK4)

History: Purchased in April 2022 from a dealer in the Inchiri region of Mauritania by an Algerian team represented by David Lehman.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Separated well-formed, equilibrated, glass-free chondrules containing Cr-magnetite are set in a medium-grained matrix containing stained Cr-magnetite, intermediate plagioclase and chlorapatite plus very minor kamacite and pentlandite.

Geochemistry: Olivine (Fa32.3±0.2, range Fa32.0-32.7, N = 6), low-Ca pyroxene (Fs27.0±0.5Wo0.7±0.1, range Fs26.2-27.7Wo0.6-0.8, N = 6), augite (Fs10.0±0.4Wo46.7±1.3, range Fs8.3-11.5Wo44.8-47.8, N = 5), plagioclase (An32.0-39.4Or2.9-4.7, N = 4), magnetite (Cr2O3 4.2-5.2 wt.%, N =7).

Classification: Carbonaceous chondrite (CK4).

Specimens: 20.3 g including one polished thin section at UWB; remainder with Mr. D. Lehman.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Inchiri, Mauritania
Date:P 2022 Apr
Mass (g):1013
Pieces:many
Class:CK4
Shock stage:S2
Weathering grade:low
Fayalite (mol%):32.3±0.2
Ferrosilite (mol%):27.0±0.5
Wollastonite (mol%):0.7±0.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):20.3
Type spec location:UWB
Main mass:D. Lehman
Comments:Work name DL 1120; 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)
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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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Antonello Petriccione   
Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 221 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters)
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Revision
  history:
  This lists important revisions made to data for this record.

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