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Northwest Africa 7234
Basic information Name: Northwest Africa 7234
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7234
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 131 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 393 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 27 Apr 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7234 (NWA 7234)

(Northwest Africa)

Purchased: 2011

Classification: HED achondrite (Eucrite, polymict)

Petrography: The single fragment is partly covered with fusion crust and displays a light-grayish interior. It is composed of mineral and lithic clasts including basaltic and melt lithologies. Mineral fragments are large mostly exsolved pyroxenes and calcic plagioclase. Minor phases include chromite, troilite, and SiO2 polymorphs. The meteorite is crosscut by several shock-melt veins.

Geochemistry: opx: Fs60.5-64.1Wo2-4.7, FeO/MnO=28-34; cpx: Fs27.1-28.6Wo42.9-44.6, FeO/MnO=30-36; calcic plagioclase: An89 (range 85.3-90).

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2011
Mass (g):131
Pieces:1
Class:Eucrite-pmict
Shock stage:moderate
Weathering grade:moderate
Ferrosilite (mol%):60.5-64.1; 27.1-28.6
Wollastonite (mol%):2-4.7; 42.9-44.6
Classifier:A. Greshake, MNB
Type spec mass (g):20.0
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. 102, MAPS 50, 1662, September 2015
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)
Gregor H.   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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