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Northeast Africa 015
Basic information Name: Northeast Africa 015
     This is an OFFICIAL meteorite name.
Abbreviation: NEA 015
Observed fall: No
Year found: 2020
Country: Libya
Mass:help 610 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 240 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 16 Dec 2020
Writeuphelp
Writeup from MB 109:

Northeast Africa 015 (NEA 015)

Libya

Purchased: 2020 Dec

Classification: Martian meteorite (Shergottite)

History: Purportedly found in Libya, purchased by Mohammed Hmani in November 2020 from a Mauritanian dealer, and subsequently acquired by Ben Hoefnagels.

Physical characteristics: An elongate stone (610 g) with flat sides and rounded edges, partially covered by small patches of black fusion crust. Exterior surfaces exhibit dark brown grains set in a fine grained, pale brown groundmass. The fresh interior exhibits larger brown grains within a pale greenish-gray groundmass containing obvious glassy maskelynite.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Fresh porphyritic igneous rock containing phenocrysts of olivine (up to 2.2 mm) in a groundmass of zoned subcalcic augite and maskelynite plus accessory chromite (with variable Ti content), pyrrhotite and pentlandite. A search was made for accessory phosphates but none were found in the studied sample.

Geochemistry: Olivine (Fa30.9-38.7, FeO/MnO = 50-55, N = 6), subcalcic augite (Fs7.4-12.4Wo24.6-30.7, FeO/MnO = 29-32, N = 6), maskelynite (An62.2-63.1Or0.5, N = 2).

Classification: Shergottite (olivine-phyric).

Specimens: 24.1 g including one polished thin section and one polished thick section at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Paris
Date:P 2020 Dec
Mass (g):610
Pieces:1
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Fayalite (mol%):30.9-38.7
Ferrosilite (mol%):7.4-12.4
Wollastonite (mol%):24.6-30.7
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):24.1
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:Work name MH-Q9; 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)
Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Libya
Coordinates:Unknown.

Statistics:
     This is 1 of 1506 approved meteorites from Libya (plus 22 unapproved names) (plus 2 impact craters)

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