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Northwest Africa 6440
Basic information Name: Northwest Africa 6440
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6440
Observed fall: No
Year found: 2009
Country: Morocco
Mass:help 19.1 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  CR2
Recommended:  CR2    [explanation]

This is 1 of 163 approved meteorites classified as CR2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Comments: Approved 3 Mar 2012
Writeuphelp
Writeup from MB 100:

Northwest Africa 6440 (NWA 6440)

Morocco

Found: 2009

Classification: Carbonaceous chondrite (CR2)

Petrography: Abundant heavily armored porphyritic chondrules and small AOAs and CAIs.

Geochemistry: Tight Fa range of 0.6-1.4, Fe/Mn=12; low-Ca pyroxene, Fs1.6-4.3, Fe/Mn=8; metal Ni=5.8 wt%.

Data from:
  MB100
  Table 1
  Line 1379:
Place of purchase:Erfoud
Date:2009
Mass (g):19.1
Pieces:1
Class:CR2
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):1.2
Ferrosilite (mol%):1.6 -4.3
Wollastonite (mol%):0.3-1.8
Classifier:T. Bunch and J. Wittke, NAU
Type spec mass (g):3.91
Type spec location:PSF
Main mass:F. Kuntz
Comments:Submitted by Wittke
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
Kuntz: Fabien Kuntz, France; 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 Lutzon   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1394 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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