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Northwest Africa 7405
Basic information Name: Northwest Africa 7405
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7405
Observed fall: No
Year found: 2008
Country: Morocco
Mass:help 305 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  L3
Recommended:  L3    [explanation]

This is 1 of 705 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 16 Apr 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 7405 (NWA 7405)

Morocco

Purchased: Jan 2008

Classification: Ordinary chondrite (L3)

Petrography: Chondrules average ~400 µm in apparent diameter; none of them contains clear colorless glass.  There are a lot of broken chondrules visible in thin section.  Many low-Ca pyroxene grains exhibit polysynthetic twins. The rock is moderately recrystallized and is about as equilibrated as H3.8 Dhajala.

Classification: Ordinary chondrite (L3).

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Purchased from Dean Bessey
Date:P Jan 2008
Mass (g):305.3
Pieces:1
Class:L3
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):23.9±3.1 (n=9)
Ferrosilite (mol%):10.5±7.7 (n=8)
Wollastonite (mol%):3.0±2.0 (n=8)
Classifier:A. Rubin, UCLA
Type spec mass (g):26.12
Type spec location:UCLA
Main mass:Utas
Finder:anonymous
Comments:A single desert-varnished individual was recovered.; submitted by JUtas
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
JUtas: Jason Utas, United States (private address; updated 8 Jun 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1488 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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