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Northwest Africa 5586
Basic information Name: Northwest Africa 5586
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5586
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 131 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 501 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 Dec 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 5586 (NWA 5586)

(Northwest Africa)

Purchased: 2008

Classification: HED achondrite (Eucrite)

Petrography: Eucritic breccia composed of basaltic fragments, impact melt clasts, and mineral fragments (dominantly pyroxene and calcic plagioclase) set in a fine-grained matrix. Pyroxene has fine exsolution lamellae. Minor phases include silica polymorphs, chromite, and rare FeNi metal.

Geochemistry: low-Ca pyroxene: Fs55.2±0.8Wo5.4±1.6 (Fs53.3-56.7Wo2.8-8.2, FeO/MnO=31-35, n=14); Ca-pyroxene: Fs25±1.2Wo41.6±1.2 (Fs23.1-28.1Wo38.8-43.2, FeO/MnO=25-31, n=18); calcic plagioclase: An88.7±2 (An85.3-95, n=17)

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2008
Mass (g):131
Pieces:1
Class:Eucrite
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):55.2; 25
Wollastonite (mol%):5.4; 41.6
Classifier:A. Greshake, MNB
Type spec mass (g):20.5
Type spec location:MNB
Main mass:Beat Booz
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum f├╝r Naturkunde, Invalidenstra├če 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Beat Booz   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7727 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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