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Northwest Africa 5887
Basic information Name: Northwest Africa 5887
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5887
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 33 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 161 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 26 Sep 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 5887 (NWA 5887)

(Northwest Africa)

Purchased: 2009

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was bought in 2009 from a Moroccan meteorite dealer in Erfoud, Morocco.

Physical characteristics: Two small grayish individuals lacking any fusion crust.

Petrography: The meteorite is a breccia composed of basaltic, impact melt, and mineral clasts set into a clastic matrix. Major mineral phases are exsolved pyroxene and plagioclase up to 500 µm in size. Minor phases include chromite, ilmenite, pyrrhotite, silica, and metallic iron.

Geochemistry: low-Ca pyroxene: Fs54.7±1.8Wo5.9±2.1 (Fs51.7-57.4Wo2.9-9.7, n=13, FeO/MnO=31-36); Ca-pyroxene: Fs28.4±1.9Wo38.4±2.1 (Fs25.3-32.1Wo34.2-41.9, n=16, FeO/MnO=30-38); calcic plagioclase: An89.6±1.4 (An85.9-91.3, n=14)

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2009
Mass (g):33
Pieces:2
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):54.7; 28.4
Wollastonite (mol%):5.9; 38.4
Classifier:A. Greshake, MNB
Type spec mass (g):7
Type spec location:MNB
Main mass:Fabien Kuntz
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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)
Andreas Grünemeyer   
Piotr gural100   
The Wilcox Collection of Meteorites                  
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2061 unapproved names)

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