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Northwest Africa 7326
Basic information Name: Northwest Africa 7326
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7326
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 60.1 g
Meteoritical Bulletin:  MB 101  (2012)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 272 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Dec 2012
Writeup from MB 101:

Northwest Africa 7326 (NWA 7326)

(Northwest Africa)

Purchased: 2004

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Pierre-Marie Pele in 2004 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Fine-grained monomict breccia composed mainly of unexsolved pyroxene and calcic plagioclase with accessory ilmenite, troilite, silica polymorph, chromite, rare baddeleyite, and larger grains of altered Ni-free metal. Pyroxene is mostly pigeonite with sparse orthopyroxene, and has been recrystallized into aggregates of polygonal grains. Plagioclase has been transformed by shock to aggregates of tiny birefringent grains, and probably underwent complete melting.

Geochemistry: Pigeonite (Fs48.5-50.6Wo15.6-12.7, FeO/MnO = 30-33), orthopyroxene (Fs55.7Wo2.5, FeO/MnO = 38).

Classification: Eucrite, monomict

Specimens: 13.8 g of type material and one polished thin section are on deposit at UWB. The remaining material is held by Mr. P. Pele.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2004
Mass (g):60.1
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):48.5-50.6
Wollastonite (mol%):15.6-12.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):13.8
Type spec location:UWB
Main mass:P. Pele
Comments:PMP12-1; submitted by A. Irving
   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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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