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Northeast Africa 017
Basic information Name: Northeast Africa 017
     This is an OFFICIAL meteorite name.
Abbreviation: NEA 017
Observed fall: No
Year found: 2020
Country: Libya
Mass:help 275 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  Diogenite-pm
Recommended:  Diogenite-pm    [explanation]

This is 1 of 63 approved meteorites classified as Diogenite-pm.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 13 Mar 2021
Writeuphelp
Writeup from MB 110:

Northeast Africa 017 (NEA 017)

Libya

Purchased: 2020 Apr

Classification: HED achondrite (Diogenite, polymict)

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

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed mainly of angular diogenitic orthopyroxene grains plus some angular olivine grains and sparse lithic clasts of feldspathic diogenite (composed predominantly of orthopyroxene + anorthite) and ophitic-textured eucrite (composed predominantly exsolved pigeonite + calcic plagioclase). Low-Ti chromite and troilite are present as accessory phases.

Geochemistry: Orthopyroxene (Fs25.0-31.5Wo1.3-3.1, FeO/MnO = 27-32, N = 4), low-Ca pyroxene host (Fs41.5-44.0Wo1.6-3.3, FeO/MnO = 24-30, N = 3), augite exsolution lamellae (Fs13.4-19.7Wo40.4-43.6, FeO/MnO = 21-26, N = 3), olivine (Fa33.4-34.4, FeO/MnO = 50, N = 2), anorthite (An91.8-94.4Or0.2-0.3, N = 4).

Classification: Diogenite (polymict breccia).

Specimens: 27.1 g including 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 Apr
Mass (g):275
Pieces:1
Class:Diogenite-pm
Shock stage:low
Weathering grade:low
Fayalite (mol%):33.4-34.4
Ferrosilite (mol%):25.0-31.5; 41.5-44.0; 13.4-19.7
Wollastonite (mol%):1.3-3.1; 1.6-3.3; 40.4-43.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):27.1
Type spec location:UWB
Main mass:M. Arjdal
Finder:anonymous
Comments:Work name Arj ZM 297; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Catalogs:
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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Geography:

Libya
Coordinates:Unknown.

Statistics:
     This is 1 of 1553 approved meteorites from Libya (plus 24 unapproved names) (plus 2 impact craters)
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Revision
  history:
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