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Northeast Africa 034
Basic information Name: Northeast Africa 034
     This is an OFFICIAL meteorite name.
Abbreviation: NEA 034
Observed fall: No
Year found: 2020
Country: Libya
Mass:help 253 g
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 4 Sep 2021
Writeup from MB 110:

Northeast Africa 034 (NEA 034)


Purchased: 2020 Dec

Classification: Ordinary chondrite (LL3)

History: Purchased by Mbark Arjdal in December 2020 from a Libyan dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed, closely packed, glass-bearing, unequilibrated chondrules (apparent diameter 860±440 µm, N = 25; including one chondrule > 5 mm across in the studied thin section) are set in a fine grained matrix containing troilite, kamacite, pigeonite, subcalcic augite, sodic plagioclase and chromite. No phosphates were observed.

Geochemistry: Olivine (Fa24.0±11.0, range Fa1.5-37.5, N = 8; Cr2O3 in ferroan olivine 0.03-0.91 wt.%, mean 0.17±0.28 wt.%, N = 9), low-Ca pyroxene (Fs13.2±7.5Wo1.1±0.8, range Fs4.6-18.6Wo0.4-2.1, N = 3), pigeonite (Fs29.6Wo13.2), subcalcic augite (Fs5.0±3.0Wo34.7±2.5, range Fs2.9-7.1Wo32.9-36.4, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.11.

Classification: Ordinary chondrite (LL3).

Specimens: 44 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  Table 0
  Line 0:
Place of purchase:Libya
Date:P 2020 Dec
Mass (g):253
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):24.0±11.0
Ferrosilite (mol%):13.2±7.5
Wollastonite (mol%):1.1±0.8
Magnetic suscept.:4.11
Classifier:A. Irving, UWS, and J. Boesenberg, Brown U.
Type spec mass (g):44
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj ZM 794; submitted by A. Irving
   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)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 1528 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters)

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