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Northwest Africa 15313
Basic information Name: Northwest Africa 15313
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15313
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 2.1 kg
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  H4
Recommended:  H4    [explanation]

This is 1 of 6484 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 1 Oct 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15313 (NWA 15313)

(Northwest Africa)

Purchased: 2021 Aug

Classification: Ordinary chondrite (H4)

History: Purchased by Jason Whitcomb in August 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed equilibrated chondrules containing devitrified glass are set in a relatively coarse grained matrix containing extensively altered kamacite, troilite, chromite, merrilite and secondary calcite, but no plagioclase. Veinlets of secondary Fe oxides are present.

Geochemistry: Olivine (Fa18.6±0.2, range Fa18.2-18.9, N = 8), low-Ca pyroxene (Fs16.4±0.5Wo1.1±0.1, range Fs15.4-16.9Wo1.0-1.3, N = 7).

Classification: Ordinary chondrite (H4).

Specimens: 24.7 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Aug
Mass (g):2100
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):18.6±0.2
Ferrosilite (mol%):16.4±0.5
Wollastonite (mol%):1.1±0.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):24.7
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-88; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
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 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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