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Northwest Africa 15238
Basic information Name: Northwest Africa 15238
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15238
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 462 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  LL3
Recommended:  LL3    [explanation]

This is 1 of 487 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 5 Sep 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15238 (NWA 15238)

(Northwest Africa)

Purchased: 2021 Feb

Classification: Ordinary chondrite (LL3)

History: Purchased by Shun-Chung Yang in February 2021 from a dealer in Tindouf, Algeria.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed unequilibrated chondrules (apparent diameter 930 ± 440 µm, N = 26) containing glass or devitrified glass are set in a fine grained matrix containing altered kamacite, chromite and troilite. Minor shock melt veinlets are present.

Geochemistry: Olivine (Fa20.8±11.1, range Fa4.5-35.2, N = 9; Cr2O3 in ferroan olivine 0.02-0.11 wt.%, mean 0.04 wt.%, sd 0.02 wt.%, N = 13), low-Ca pyroxene (Fs22.2±7.8Wo1.8±1.6, range Fs5.8-35.9Wo0.3-4.4, N = 10), subcalcic augite (Fs18.2Wo10.8). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.24.

Classification: Ordinary chondrite (LL3).

Specimens: 33.7 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Tindouf
Date:P 2021 Feb
Mass (g):462
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):20.8±11.1
Ferrosilite (mol%):22.2±7.8
Wollastonite (mol%):1.8±1.6
Magnetic suscept.:4.24
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):33.7
Type spec location:UWB
Main mass:S.-C. Yang
Comments:Work name SCY-66; 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. ?
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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