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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 505 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)
Find references in NASA ADS:
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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)
Charley Kettel Photo added 20 Oct 2022
Dirk Hohmann Photo added 20 Oct 2022
Photo added 20 Oct 2022
Gregor H.   
John Lutzon   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1903 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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