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Northwest Africa 6407
Basic information Name: Northwest Africa 6407
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6407
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 512 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 217 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 1 Nov 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 6407 (NWA 6407)

(Northwest Africa)

Purchased: 2010

Classification: Mesosiderite

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

Petrography: The meteorite is a breccia composed of silicate clasts separated from each other by broad veins and patches of iron-oxides and -hydroxides. Assuming that these alteration products formerly were FeNi metal, the metal portion would have been initially about 40% and the silicate portion about 60% of the rock. The silicate portion studied displays a cumulate texture of large compositionally zoned orthopyroxene crystals and less abundant calcic plagioclase. Minor phases include olivine, chromite, merillite and troilite.

Geochemistry: low-Ca pyroxene, Fs34.2±7.9Wo5.3±3.8 (Fs22.7-49.5Wo1.6-14.4, n=29, FeO/MnO=24-32); calcic plagioclase, An91±4.5 (84.7-95.1, n=22)

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2010
Mass (g):512
Pieces:21
Class:Mesosiderite
Shock stage:low
Weathering grade:high
Fayalite (mol%):39.3
Ferrosilite (mol%):34.2
Wollastonite (mol%):5.3
Classifier:A. Greshake, MNB
Type spec mass (g):22.6
Type spec location:MNB
Main mass:Hanno Strufe
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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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