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Northwest Africa 14964
Basic information Name: Northwest Africa 14964
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14964
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 169 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  L6
Recommended:  L6    [explanation]

This is 1 of 12780 approved meteorites (plus 11 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 18 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14964 (NWA 14964)

(Northwest Africa)

Purchased: 2021 Sep

Classification: Ordinary chondrite (L6)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) The specimen is an equilibrated Type 6 chondrite with cross-cutting dark shock melt veins. The unmelted portion, with shock stage S2, is largely recrystallized with sparse remnant chondrules and accessory stained kamacite, sodic plagioclase, chromite, troilite, merrillite and chlorapatite. Veins have a quench texture and consist of 5-10 micron-sized olivine and low-Ca pyroxene grains with interstitial sulfide-bearing silicate glass.

Geochemistry: Olivine (Fa24.7±0.2, range Fa24.5-25.0, N = 6), low-Ca pyroxene (Fs21.0±0.3Wo1.6±0.3, range Fs20.6-21.2Wo1.2-1.9, N = 6).

Classification: Ordinary chondrite (L6, with shock melt veins).

Specimens: 22.0 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 Sep
Mass (g):169
Pieces:1
Class:L6
Weathering grade:W1
Fayalite (mol%):24.7±0.2
Ferrosilite (mol%):21.0±0.3
Wollastonite (mol%):1.6±0.3
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):22.0
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-115; 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. ?
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Geography: 
Coordinates:Unknown.

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

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