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Northwest Africa 2225
Basic information Name: Northwest Africa 2225
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2225
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 40 g
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 629 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 21 Feb 2005
Writeuphelp
Writeup from MB 90:

Northwest Africa 2225

Morocco

Find: April 2004

Achondrite (ureilite)

History: D. Bessey purchased one mass of 40 g in Erfoud, Morocco.

Petrography: (Paul Warren, UCLA) The stone is composed mostly of olivine and pigeonite ((Px/Px+Ol) = ~0.25) with minor carbon-rich matrix.

Geochemistry: Olivine (Fo82.3); CaO = 0.36, Cr2O3 = 0.71 (both wt%, n = 25 cores only); pigeonite (En75.2Wo9.8; Al2O3 = 0.85, Cr2O3 = 1.22, MnO = 0.41 [all wt%, n = 13 analyses]). Bulk trace elements: Sc = 7.0, Ni = 1140, Zn = 280 (all µg/g); Ir = 231, Au = 9.8 (both ng/g).

Classification: Achondrite (ureilite).

Specimens: An 8.3 g type specimen is on deposit at UCLA. D. Bessey hold the main mass of 20 g. N. Gessler holds 11 g.

Data from:
  MB90
  Table 2
  Line 17:
Place of purchase:Erfoud, Morocco
Date:Apr 2004
Mass (g):40
Pieces:1
Class:Ure
Fayalite (mol%):~18
Type spec mass (g):20
Institutions
   and collections		 UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
Bessey: Dean Bessey ,P.O. Box 40810, Glenfield, Auckland 1310 , New Zealand; Website (private address)
Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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