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Northwest Africa 14387
Basic information Name: Northwest Africa 14387
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14387
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 902 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 387 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 26 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14387 (NWA 14387)

(Northwest Africa)

Purchased: 2020

Classification: Ordinary chondrite (LL3)

History: Puchased by Nicholas Gessler in 2020 from a Moroccan dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed unequilibrated chondrules (apparent diameter 800±270 µm, N = 25; one 2 mm) containing devitrified glass are set in a fine grained matrix containing stained metal, troilite and chromite. Olivine and pyroxene exhibit significant compositional zoning, and some shock darkening of mafic silicates is evident in thin section.

Geochemistry: Olivine (Fa24.8±6.0, range Fa10.4-32.7, Cr2O3 0.01-0.12 wt.%, mean 0.06±0.04 wt%, N = 13), low-Ca pyroxene (Fs18.0±11.5Wo1.4±1.5, range Fs6.7-33.3Wo0.3-3.6, N = 4). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.37.

Classification: Ordinary chondrite (LL3). LL group based on magnetic susceptibility combined interpreted in the light of weathering grade W1.

Specimens: 20.4 g plus one polished thin section at UWB; remainder with Mr. N. Gessler.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020
Mass (g):902
Pieces:1
Class:LL3
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):24.8±6.0
Ferrosilite (mol%):18.0±11.5
Wollastonite (mol%):1.4±1.5
Magnetic suscept.:4.37
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):20.4
Type spec location:UWB
Main mass:N. Gessler
Comments:Work name NG-AV; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8138 approved meteorites from (Northwest Africa) (plus 1941 unapproved names)

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