Northeast Africa 026
(NEA 026)
CO3 Carbonaceous meteorite
Found in June 2020
In Libya 

127.4 grams main mass 

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TRULY A BEAUTIFUL MUSEUM QUALITY SHOWPIECE
FRESH FUSION CRUST WITH  VELVETY TEXTURE AND TONS OF CONTRACTION CRACKS

OFFICIAL CLASSIFICATION DATA SOURCE:
THE METEORITICAL SOCIETY
INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE
LUNAR AND PLANETARY INSTITUTE
METEORITICAL BULLETIN DATABASE

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: 176 g
Classification
  history:
Recommended:  CO3  

Comments:Approved 6 Oct 2021
Writeup
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)