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Northwest Africa 7273
Basic information Name: Northwest Africa 7273
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7273
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 115 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2817 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 11 Jun 2012
Writeuphelp
Writeup from MB 100:

Northwest Africa 7273 (NWA 7273)

(Northwest Africa)

Purchased: 2012 Apr

Classification: Ordinary chondrite (LL6)

History: Purchased by Greg Hupé in 2012 April from a dealer in Erfoud, Morocco.

Petrography: Fragmental breccia composed of angular clasts (up to 1.1 mm across) in a very sparse dark matrix (rich in iron hydroxides from altered metal). Clasts contain very sparse chondrules and chondrule fragments, and consist of olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, troilite and kamacite.

Geochemistry: Olivine (Fa31.6-32.0), orthopyroxene (Fs24.8-25.5Wo2.4), clinopyroxene (Fs10.7-11.0Wo43.6-43.4).

Classification: Ordinary chondrite (LL6).

Data from:
  MB100
  Table 1
  Line 1703:
Place of purchase:Erfoud
Date:P 2012 Apr
Mass (g):115
Pieces:1
Class:LL6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):31.6-32.0
Ferrosilite (mol%):24.8-25.5
Wollastonite (mol%):2.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWS
Main mass:GHupé
Comments:GH-434; 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)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
John A. Shea   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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