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Northwest Africa 5597
Basic information Name: Northwest Africa 5597
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5597
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 171.5 g
Classification
  history:
Recommended:  Diogenite    [explanation]

This is 1 of 459 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 3 Jul 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 5597 (NWA 5597)

(Northwest Africa)

Purchased: 2007

Classification: HED achondrite (Diogenite)

History: The meteorite was purchased in Outat el Hadj, Morocco.

Physical characteristics: Two greyish-greenish fragments largely covered by shiny fusion crust.

Petrography: The meteorite is a monomict breccia predominantly composed of blocky up to 3 mm sized orthoproxene grains and fine-grained cataclastic regions. Minor phases include olivine, plagioclase, chromite, and FeS. No metallic iron has been detected.

Geochemistry: low-Ca pyroxene: Fs25.4±0.2Wo2.7±0.5 (Fs24.8-25.6Wo1.8-3.2, n=11, FeO/MnO=24-26); olivine: Fa30.0±0.2 (Fa29.8-30.2, n=7, FeO/MnO=41-50); calcic plagioclase: An87.1±0.7 (An86.3-87.4, n=10)

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Outat el Hadj, Morocco
Date:P 2007
Mass (g):171.5
Pieces:2
Class:Diogenite
Shock stage:moderate
Weathering grade:moderate
Fayalite (mol%):30.0
Ferrosilite (mol%):25.4
Wollastonite (mol%):2.7
Classifier:A. Greshake, MNB
Type spec mass (g):20.2
Type spec location:MNB
Main mass:Svend Buhl
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
DCOM   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7688 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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