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Northwest Africa 7128
Basic information Name: Northwest Africa 7128
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7128
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 260 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  LL4
Recommended:  LL4    [explanation]

This is 1 of 360 approved meteorites classified as LL4.   [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 7128 (NWA 7128)

(Northwest Africa)

Purchased: 2011 Sep

Classification: Ordinary chondrite (LL4)

History: Purchased by Gary Fujihara from a Moroccan dealer in 2011 September.

Petrography: Well-formed, fairly large chondrules and very low metal content. Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, troilite (some grains to 4 mm), fresh kamacite, and taenite.

Geochemistry: Olivine (Fa27.7-28.3), orthopyroxene (Fs22.6±0.0Wo1.5).

Classification: Ordinary chondrite (LL4).

Data from:
  MB100
  Table 1
  Line 1647:
Place of purchase:Morocco
Date:P 2011 Sep
Mass (g):260
Pieces:many
Class:LL4
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):27.7-28.3
Ferrosilite (mol%):22.6±0.0
Wollastonite (mol%):1.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21
Type spec location:UWS
Main mass:G. Fujihara
Comments:GF11-16; 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)
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)
Michael S. Scherman   
The Wilcox Collection of Meteorites      
Public domain photographs:
Gary Fujihara   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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