header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 8 Jun 2021
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
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
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 247 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Dec 2012
Writeuphelp
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:
  MB101
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2004
Mass (g):60.1
Pieces:1
Class:Eucrite-mmict
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
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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7727 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

Direct link to this page