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Northwest Africa 14787
Basic information Name: Northwest Africa 14787
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14787
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 830 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  L3
Recommended:  L3    [explanation]

This is 1 of 840 approved meteorites (plus 2 unapproved names) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 19 Mar 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14787 (NWA 14787)

(Northwest Africa)

Purchased: 2021 Jun

Classification: Ordinary chondrite (L3)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed, unequilibrated chondrules containing either devitrified glass or clear glass are set in a fine grained matrix containing altered kamacite, taenite, troilite, chromite and chlorapatite.

Geochemistry: Olivine (Fa23.7±13.1, range Fa1.1-42.5, N = 14; Cr2O3 in ferroan olivine 0.01-0.66 wt.%, mean 0.13 wt.%, sd 0.20 wt.%, N = 12), low-Ca pyroxene (Fs16.8±8.6Wo1.1±1.1, range Fs2.4-23.9Wo0.2-2.9, N = 7). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.64.

Classification: Ordinary chondrite (L3).

Specimens: 23.6 g including one polished thick section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Jun
Mass (g):830
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):23.7±13.1
Ferrosilite (mol%):16.8±8.6
Wollastonite (mol%):1.1±1.1
Magnetic suscept.:4.64
Classifier:(A. Irving, UWS and J. Boesenberg, BrownU)
Type spec mass (g):23.6
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-57; 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:
Find references in Google Scholar:
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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