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Northwest Africa 3222
Basic information Name: Northwest Africa 3222
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 3222
Observed fall: No
Year found: 2000
Country: Morocco
Mass:help 79 g
Classification
  history:
Meteoritical Bulletin:  MB 92  (2007)  Ureilite-mmict
Recommended:  Ureilite    [explanation]

This is 1 of 649 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 24 Jul 2007
Writeuphelp
Writeup from MB 92:

Northwest Africa 3222

Morocco

Find: 2000

Achondrite (ureilite, monomict)

History: An anonymous finder recovered 79 g.

Physical characteristics: One flatened individual stone with sand blasted crust on 80% of the surface.

Petrography and Mineral compositions: (H. Takeda, Chiba and A. Yamaguchi, NIPR). The texture shows slightly rounded angular fragments (up to 2.5x1.2 mm) of olivine (Fo87-89 [cores]; Fo92-96 [rims]) in a comminuted matrix. Small rounded to oval orthopyroxene (Fs11.2Wo4.8) and augite (Fs7Wo37) grains are poikilitically enclosed in olivine crystals. Carbonaceous material with iron oxide-hydroxide occur as narrower, intergranular veins in a crystalline clast (4x4 mm). The olivine grains in this clast show mosaicism with tilt boundaries, but the olivine fragments in the breccia matrix are not shocked. This meteorite contains mostly olivine with minor inclusions of orthopyroxene and augite. Many olivine fragments in the matrix do not contain carbonaceous veins.

Classification: Achondrite (ureilite, monomict); S2, moderate weathering.

Type specimen: A total of 15.8 g of sample and one thin section are on deposit at NIPR. Fectay hold the main mass.

Data from:
  MB92
  Table 2
  Line 10:
Place of purchase:Morocco
Date:2000
Mass (g):79
Pieces:1
Class:Ure
Type spec mass (g):15.8
Institutions
   and collections		 NIPR: Antarctic Meteorite Research Center, National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan; Website (institutional address; updated 9 Dec 2013)
Chiba: Chiba Institute of Technology, Tsudanuma, Narashino, Chiba 275-0016, Japan (institutional address)
Fectay: Bruno Fectay and Carine Bidaut, La Memoire de la Terre SARL, 39800 Aumont, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2012 approved meteorites from Morocco (plus 35 unapproved names) (plus 1 impact crater)

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