header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 3 Jun 2023
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
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
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 452 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
Writeuphelp
Writeup from MB 110:

Northeast Africa 034 (NEA 034)

Libya

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:
  MB110
  Table 0
  Line 0:
Place of purchase:Libya
Date:P 2020 Dec
Mass (g):253
Pieces:1
Class:LL3
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
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)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Libya
Coordinates:Unknown.

Statistics:
     This is 1 of 1538 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters)

Direct link to this page