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Northwest Africa 4395
Basic information Name: Northwest Africa 4395
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4395
Observed fall: No
Year found: 2004
Country: Morocco
Mass:help 240 g
Classification
  history:
Meteoritical Bulletin:  MB 94  (2008)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 522 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 8 Sep 2008
Writeuphelp
Writeup from MB 94:

Northwest Africa 4395

Northwest Africa

Find: 2004

Achondrite (diogenite)

History: The meteorite was bought by the main mass holder in Erfoud, Morocco, in 2006.

Physical characteristics: One brownish fragment without fusion crust weighing 240 g was found.

Petrography: (A. Greshake, MNB) The meteorite is composed of large blocky orthopyroxene. Minor phases include plagioclase, Ca-phosphates and FeNi metal.

Mineral compositions and geochemistry: Low-Ca pyroxene, Fs30.5Wo2.7; plagioclase, An90.5–91.7. Oxygen isotopes (I. A. Franchi and R. C. Greenwood, OU) mean of two replicates δ17O = 2.09‰, δ18O = 4.39‰, δ17O = -0.19‰.

Classification: Achondrite (diogenite), low degree of shock, moderate degree of weathering.

Type specimens: A total of 20.1 g plus one polished thin section are on deposit at MNB. Ralew holds the main mass.  

Data from:
  MB94
  Table 2
  Line 16:
State/Prov/County:Morocco
Date:2004
Mass (g):240
Pieces:1
Class:Diogenite
Ferrosilite (mol%):30.5
Wollastonite (mol%):2.7
Classifier:A. Greshake, MNB
Type spec mass (g):20.1
Type spec location:MNB
Main mass:Ralew
Comments:Mean of two replicates δ17O = 2.09‰, δ18O = 4.39‰, Δ17O = -0.19‰.
Plots: O isotopes:  
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Martin Altmann   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Gregor H.   
John Lutzon   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)
Also see:
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Revision
  history:
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