NORTHEAST AFRICA 026
(NEA 026)
CO3 CARBONACEOUS 

This meteorite is officially classified & approved as NEA 026 Co3 Carbonaceous 
Classified by world renowned and profoundly respected Dr Anthony J. Irving and team at University of Washington.         
     
NEA 026
  CO3 CARBONACEOUS 
FOUND IN JUNE 2020
IN LIBYA 
 MAIN MASS 
 127.4 GRAM 
YOU ARE PURCHASING THE MAIN MASS OF NEA 026 CO3 CARBONACEOUS METEORITE 


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OFFICIAL CLASSIFICATION DATA SOURCE:
THE METEORITICAL SOCIETY
INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE
LUNAR AND PLANETARY INSTITUTE
METEORITICAL BULLETIN DATABASE
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Northeast Africa 026
Basic informationName: Northeast Africa 026
     This is an OFFICIAL meteorite name.
Abbreviation: NEA 026
Observed fall: No
Year found: 2020
Country: Libya
Mass:help 176 g
Classification
  history:
Recommended:  CO3  

Comments:Approved 6 Oct 2021
Writeuphelp
Writeup from MB 110:

Northeast Africa 026 (NEA 026)

Libya

Purchased: 2020 Jun

Classification: Carbonaceous chondrite (CO3)

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

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, relatively small glass-bearing chondrules (apparent diameter 260±160 µm, N = 23), zoned olivine fragments and very fine grained CAI are set in a relatively fresh, fine grained matrix (~40 vol.%, opaque in thin section) containing troilite, taenite and kamacite. Silica polymorph is present in some chondrules. Mineral phases in CAI include gehlenite, aluminous diopside, spinel, anorthite and iron oxide.

Geochemistry: Olivine (Fa27.5±28.9, range Fa0.8-72.7, N = 10; Cr2O3 in ferroan olivine 0.08-0.47 wt.%, mean 0.21 wt.%, sd 0.14 wt.%, N = 11), low-Ca pyroxene (Fs0.7±0.1Wo1.1±0.2, range Fs0.6-0.8Wo0.9-1.2, N = 2), pigeonite (Fs0.8Wo6.2; Fs4.5Wo5.3; N = 2), Al-Ti-diopside (Fs0.9±0.2Wo47.3±0.2, range Fs0.7-1.0Wo47.1-47.4, Al2O3 11.0-12.9 wt.%, TiO2 1.2-1.4 wt.%, N = 2).

Classification: Carbonaceous chondrite (CO3).

Specimens: 39.6 g plus 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 Jun
Mass (g):176
Pieces:1
Class:CO3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):27.5±28.9
Ferrosilite (mol%):0.7±0.1
Wollastonite (mol%):1.1±0.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):39.6
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj ZM 752; 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:

Libya
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Revision
  history:
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