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Northwest Africa 14876
Basic information Name: Northwest Africa 14876
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14876
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 297 g
Classification
  history:
Recommended:  EL6    [explanation]

This is 1 of 133 approved meteorites classified as EL6.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 29 Jan 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 14876 (NWA 14876)

(Northwest Africa)

Purchased: 2021 Sep

Classification: Enstatite chondrite (EL6)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Protogranular aggregate composed of enstatite, diopside and sodic plagioclase with accessory Si-bearing kamacite, daubreelite, alabandite, oldhamite, troilite and schreibersite. Sparse radial pyroxene chondrules are present.

Geochemistry: Enstatite (Fs0.2±0.1Wo1.6±0.1, range Fs0.0-0.4Wo1.5-1.7, N = 5), diopside (Fs0.2±0.1Wo45.9±0.1, range Fs0.1-0.3Wo45.8-46.0, N = 3), plagioclase (Ab81.5±0.7An14.2±0.4Or4.4±0.3, range Ab80.6-82.2An13.8-14.7Or4.0-4.7, N = 4), metal (Ni 5.5-6.5 wt.%, Si 0.8±0.0 wt.%, N = 7).

Classification: Enstatite chondrite (EL6).

Specimens: 22.3 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Sep
Mass (g):297
Pieces:1
Class:EL6
Shock stage:S2
Weathering grade:W1
Ferrosilite (mol%):0.2±0.1
Wollastonite (mol%):1.6±0.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):22.3
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-108; 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 26 Oct 2023)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
A. Irving   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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