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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
Classification
  history:
Recommended:  CVox3    [explanation]

This is 1 of 10 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
Writeuphelp
Writeup from MB 110:

Northeast Africa 029 (NEA 029)

Libya

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:
  MB110
  Table 0
  Line 0:
Place of purchase:Libya
Date:P 2019 Nov
Mass (g):194
Pieces:1
Class:CVox3
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
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:
Geography:

Libya
Coordinates:Unknown.

Statistics:
     This is 1 of 1522 approved meteorites from Libya (plus 22 unapproved names) (plus 2 impact craters)

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