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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:
Recommended:  CK4    [explanation]

This is 1 of 123 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev   
Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 200 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters)

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