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Northwest Africa 787
Basic information Name: Northwest Africa 787
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 787
Observed fall: No
Year found: 2001
Country: (Northwest Africa)
Mass:help 30 kg
Classification
  history:
Recommended:  L3-6    [explanation]

This is 1 of 51 approved meteorites classified as L3-6.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 27 Mar 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 787 (NWA 787)

(Northwest Africa)

Purchased: 2001 Mar

Classification: Ordinary chondrite (L3-6)

History: Purchased by Michael Farmer in March 2001 from a dealer in Casablanca, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS; A. Rubin, UCLA) Breccia composed predominantly of type-6 chondrite clasts exhibiting some remnant chondrules in a recrystallized matrix containing stained metal and merrillite. Sparse, isolated enstatite-rich chondrules are present in this breccia, but no forsterite-rich chondrules were observed in the studied thin section.

Geochemistry: Olivine (Fa24.3-27.3, N = 3), orthopyroxene (Fs20.4Wo1.1, N=2), enstatite in one unequilibrated chondrule (Fs2.1Wo0.7), clinopyroxene (Fs1.4Wo40.3).

Classification: Ordinary chondrite (L3-6, brecciated). Contains a few isolated enstatite-rich chondrules.

Specimens: 90 g including one polished thin section at UCLA; 5.89 g at PSF; remainder with Farmer.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Casablanca
Date:P 2001 Mar
Mass (g):30000
Pieces:many
Class:L3-6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):24.3-27.3 (N=3)
Ferrosilite (mol%):20.4 (N=2)
Wollastonite (mol%):1.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):90
Type spec location:UCLA
Main mass:M. Farmer
Comments:UCLA specimen #1108; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
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. 107, in preparation (2018)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Gi-po Meteorites   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Aeroliths Collection Theodossiou   
Gerald Armstrong   
jean bernard Delbauve   
Jean-Michel Masson   
Jim K   
simkoz   
Public domain photographs:
A. Irving   
Geography: 
Coordinates:Unknown.

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

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