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Northwest Africa 6933
Basic information Name: Northwest Africa 6933
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6933
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 835 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 443 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 14 Nov 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 6933 (NWA 6933)

(Northwest Africa)

Purchased: 2010

Classification: HED achondrite (Eucrite)

Petrography: (K. Metzler, IfP) Coarse-grained eucritic clasts with ophitic to subophitic textures and mineral fragments (pyroxene, plagioclase, silica polymorph) set in a dark gray matrix. The matrix represents a crystallized melt with subophitic texture consisting of pyroxene and skeletal plagioclase crystals. Lithic clasts and mineral fragments are strongly recrystallized. Some pyroxene fragments contain Fe-rich olivine veins. Accessories are ilmenite, troilite, and metal (mostly oxidized). Calcite veins occur.

Geochemistry: Plagioclase compositions: An 89.1±2.0 (85-93; n=15). Olivine veins: Fa75.

Classification: Eucritic melt rock

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2010
Mass (g):835
Pieces:1
Class:Eucrite
Shock stage:moderate
Weathering grade:high
Fayalite (mol%):75 (n=1)
Ferrosilite (mol%):45.2±11.8 (28-59; n=15)
Wollastonite (mol%):22.2±15.4 (6-43)
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:F. Kuntz, France
Comments:Submitted by K. Metzler
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Andreas Grünemeyer   
Filip Stalmach   
Franco Vignato   
John Lutzon      
Meteor-Center   
Mike Markowitz   
The Wilcox Collection of Meteorites      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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