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Northwest Africa 5669
Basic information Name: Northwest Africa 5669
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5669
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 232 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 537 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 17 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 5669 (NWA 5669)

(Northwest Africa)

Purchased: 2008

Classification: HED achondrite (Eucrite)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Grayish rock partly covered with fusion crust.

Petrography: Fine-grained brecciated basalt showing a recrystallized, granoblastic texture with sparse up to 3 mm sized coarse-grained basaltic clasts. Predominant minerals are exsolved pyroxene and calcic plagioclase 10-30 µm in size. Minor phases are silica, chromite, ilmenite, and FeS. No metallic iron has been detected. The meteorite contains some shock melt veins.

Geochemistry: low-Ca pyroxene: Fs65.3±0.5Wo4.6±0.7 (Fs64.6-66.4Wo3.4-5.5, FeO/MnO=29-32, n=13); Ca-pyroxene: Fs32.8±0.7Wo41.5±0.6 (Fs31.7-33.7Wo40.4-42.5, FeO/MnO=32-35, n=11); calcic plagioclase: An89.3±0.6 (An88.0-90.2, n=13)

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2008
Mass (g):232
Pieces:1
Class:Eucrite
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):65.3; 32.8
Wollastonite (mol%):4.6; 41.5
Classifier:A. Greshake, MNB
Type spec mass (g):20.2
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8024 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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