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Northwest Africa 1918
Basic information Name: Northwest Africa 1918
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1918
Observed fall: No
Year found: 2003
Country: Morocco
Mass:help 136 g
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  Eucrite-basaltic
Recommended:  Eucrite    [explanation]

This is 1 of 598 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 Feb 2006
Writeuphelp
Writeup from MB 90:

Northwest Africa 1918

Morocco

Find: January 2003

Achondrite (eucrite, basaltic)

History: DGregory purchased a complete, fusion-crusted stone weighing 136 g from a Moroccan dealer in January 2003.

Petrography: (A. Irving and S. Kuehner, UWS) Unbrecciated, with subophitic texture of dark grey pigeonite grains and groups of small anorthite laths, ilmenite (with rare baddeleyite inclusions), troilite, and Ni-free metal.

Geochemistry: Some of the large pigeonite grains have ribbon-like clinopyroxene exsolution lamellae within host orthopyroxene (Fs61.6Wo1.4; FeO/MnO = 33.7); clinopyroxene (Fs29.6Wo39.2; FeO/MnO = 29.2) occurs also as discrete grains along with silica.

Classification: Achondrite (eucrite, basaltic).

Specimens: A 20.2 g type specimen and one polished thin section are on deposit at UWS. DGregory holds the main mass.

Data from:
  MB90
  Table 2
  Line 7:
Place of purchase:Morocco
Date:Jan 2003
Mass (g):136
Pieces:1
Class:Euc
Type spec mass (g):20.2
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)
DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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