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Northwest Africa 7455
Basic information Name: Northwest Africa 7455
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7455
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 648 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H4
Recommended:  H4    [explanation]

This is 1 of 6029 approved meteorites (plus 11 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Jan 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7455 (NWA 7455)

(Northwest Africa)

Purchased: 2012 Aug

Classification: Ordinary chondrite (H4)

History: Purchased by Adam Aaronson in 2011 November in Temara, Morocco.

Petrography: Closely-packed, small chondrules. Olivine, orthopyroxene, subcalcic augite, augite, sodic plagioclase, chromite, altered kamacite and troilite.

Geochemistry: Olivine (Fa20.0-20.2), orthopyroxene (Fs16.5-17.2Wo1.3-0.9), subcalcic augite (Fs8.9-9.7Wo38.0-35.4), augite (Fs7.4Wo46.5).

Classification: Ordinary chondrite (H4).

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2012 Aug
Mass (g):648
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):20.0-20.2
Ferrosilite (mol%):16.5-17.2
Wollastonite (mol%):1.3-0.9
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1396; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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