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Northwest Africa 5690
Basic information Name: Northwest Africa 5690
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5690
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 230 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  L5-melt breccia
Recommended:  L5-melt breccia    [explanation]

This is 1 of 18 approved meteorites classified as L5-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 13 Apr 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 5690 (NWA 5690)

(Northwest Africa)

Purchased: 2007

Classification: Ordinary chondrite (L5, melt breccia)

History: The meteorite was bought from a Moroccan meteorite dealer at the mineral fair in Munich, Germany.

Petrography: The meteorite is composed of regions displaying chondritic textures with well recognizable chondrules and shock melted melt regions containing FeNi metal and sulfide globules. Chondritic regions are of L5 type; plagioclase grains size within type 5 regions is about 20 μm.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Munich, Germany
Date:P 2007
Mass (g):230
Pieces:1
Class:L5-melt breccia
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):23.6±0.6 (n=16)
Ferrosilite (mol%):20.6±0.5 (n=17)
Wollastonite (mol%):1.7±0.2 (n=17)
Classifier:A. Greshake, MNB
Type spec mass (g):32.4
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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