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Northwest Africa 5681
Basic information Name: Northwest Africa 5681
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5681
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 38 g
Classification
  history:
Recommended:  LL3-6    [explanation]

This is 1 of 33 approved meteorites classified as LL3-6.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 19 Mar 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 5681 (NWA 5681)

(Northwest Africa)

Purchased: 2008

Classification: Ordinary chondrite (LL3-6)

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

Physical characteristics: Brownish fragment with some fusion crust.

Petrography: The meteorite is a chondritic breccia consisting of up to 3.5 mm sized LL6 clasts set into LL3 groundmass. Plagioclase grain size in type 6 clasts is about 70 µm. Chondrules in groundmass have a mean diameter of about 0.8 mm. Contains minor sulfides and FeNi metal.

Geochemistry: type 3 lithology: olivine: Fa25.7±8.0 (Fa11.4-41.7, n=22); low-Ca pyroxene: Fs20.0±5.6Wo1.9±1.4 (Fs10.5-25.5Wo0.3-4.7, n=15); type 6 lithology: olivine: Fa30.9±0.1, n=5; low-Ca pyroxene: Fs25.1±0.5Wo1.8±0.1, n=5

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2008
Mass (g):38
Pieces:1
Class:LL3-6
Shock stage:S3
Weathering grade:W1
Fayalite (mol%):25.7; 30.9
Ferrosilite (mol%):20.0; 25.1
Wollastonite (mol%):1.9; 1.8
Classifier:A. Greshake, MNB
Type spec mass (g):8
Type spec location:MNB
Main mass:Mirko Graul
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. 111, in preparation (2022)
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)
Mirko Graul Photo added 19 Apr 2022
Photo added 19 Apr 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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