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Northwest Africa 15357
Basic information Name: Northwest Africa 15357
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15357
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 1180 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  H4
Recommended:  H4    [explanation]

This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 12 Nov 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15357 (NWA 15357)

(Northwest Africa)

Purchased: 2022 May

Classification: Ordinary chondrite (H4)

History: Purchased by Terry Boudreaux in May 2022 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed equilibrated chondrules containing devitrified glass are set in a relatively coarse grained matrix containing kamacite (mostly fresh but some slightly stained), taenite, troilite, chromite, augite and merrillite, but no plagioclase.

Geochemistry: Olivine (Fa18.9±0.3, range Fa18.5-19.4, N = 6), low-Ca pyroxene (Fs16.6±0.2Wo1.3±0.4, range Fs16.4-17.0Wo1.0-2.2, N = 8), augite (Fs5.9Wo45.3).

Classification: Ordinary chondrite (H4).

Specimens: 23.8 g including one polished thin section at UWB; remainder with Boudreaux.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2022 May
Mass (g):1180
Pieces:several
Class:H4
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):18.9±0.3
Ferrosilite (mol%):16.6±0.2
Wollastonite (mol%):1.3±0.4
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):23.8
Type spec location:UWB
Main mass:Boudreaux
Comments:Work name RC162.4; 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)
Boudreaux: Terry Boudreaux, Illinois, United States (private address)
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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

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