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Northeast Africa 029
Basic information Name: Northeast Africa 029
     This is an OFFICIAL meteorite name.
Abbreviation: NEA 029
Observed fall: No
Year found: 2019
Country: Libya
Mass:help 194 g
Recommended:  CVox3    [explanation]

This is 1 of 33 approved meteorites classified as CVox3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 6 Oct 2021
Writeup from MB 110:

Northeast Africa 029 (NEA 029)


Purchased: 2019 Nov

Classification: Carbonaceous chondrite (CVox3)

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

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Relatively large, well-formed chondrules (apparent diameter 1030±580 µm, N = 25; some with multiple rims) and large irregularly-shaped CAI (up to 4 cm across) are set in a fine grained matrix (~30 vol.%, almost opaque sepia brown in thin section) containing troilite, kamacite and magnetite with highly variable Cr2O3 contents. Mineral phases in CAI include gehlenite, Al-Ti-diopside, spinel, taenite and kamacite.

Geochemistry: Olivine (Fa15.9±12.7, range Fa2.4-32.1, N = 5), low-Ca pyroxene (Fs7.8±9.6Wo0.9±0.8, range Fs1.0-14.6Wo0.3-1.4, N = 2), subcalcic augite (Fs0.6Wo29.8), Al-Ti diopside (Fs2.4Wo41.1, Al2O3 6.4 wt.%, TiO2 0.8 wt.%), magnetite (Cr2O3 0.1 wt.%, 4.2 wt.%, 7.3 wt.%, N = 3).

Classification: Carbonaceous chondrite (CV3, oxidized).

Specimens: 20.2 g plus one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  Table 0
  Line 0:
Place of purchase:Libya
Date:P 2019 Nov
Mass (g):194
Shock stage:S2
Weathering grade:low
Fayalite (mol%):15.9±12.7
Ferrosilite (mol%):7.8±9.6
Wollastonite (mol%):0.9±0.8
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.2
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj H15; 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)
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)
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
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     This is 1 of 1539 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters)

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