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Northeast Africa 016
Basic information Name: Northeast Africa 016
     This is an OFFICIAL meteorite name.
Abbreviation: NEA 016
Observed fall: No
Year found: 2019
Country: Libya
Mass:help 8.75 kg
Classification
  history:
Recommended:  L5    [explanation]

This is 1 of 7227 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Feb 2021
Writeuphelp
Writeup from MB 110:

Northeast Africa 016 (NEA 016)

Libya

Purchased: 2019 Nov

Classification: Ordinary chondrite (L5)

History: Purchased by Mbark Arjdal in November 2019 from a Libyan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Sparse chondrules occur within a recrystallized matrix containing sodic plagioclase, alkali feldspar, taenite (with variable Ni/Fe ratios), stained troilite (more abundant than metal, with uneven lenses of Ni-bearing iron sulfide), low-Ti chromite, merrillite and chlorapatite. No kamacite was observed.

Geochemistry: Olivine (Fa25.0±0.5, range Fa24.1-25.4, N = 5), low-Ca pyroxene (Fs20.7±0.1Wo1.8±0.1, range Fs20.6-20.8Wo1.7-2.0, N = 5), subcalcic augite (Fs9.1Wo36.3), augite (Fs8.2±0.5Wo44.6±0.5, range Fs7.9-8.8Wo44.9-44.0, N = 3), plagioclase (Ab85.6An10.3Or4.1), alkali feldspar (Ab58.0An1.3Or40.7).

Classification: Ordinary chondrite (L5).

Specimens: 91.2 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Libya
Date:P 2019 Nov
Mass (g):8750
Pieces:many
Class:L5
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):25.0±0.5
Ferrosilite (mol%):20.7±0.1
Wollastonite (mol%):1.8±0.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):91.2
Type spec location:UWB
Main mass:M. Arjdal
Finder:anonymous
Comments:Work name Arj HA1; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Libya
Coordinates:Unknown.

Statistics:
     This is 1 of 1523 approved meteorites from Libya (plus 22 unapproved names) (plus 2 impact craters)

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