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Northwest Africa 7574
Basic information Name: Northwest Africa 7574
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7574
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 90 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 1 Jan 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7574 (NWA 7574)

(Northwest Africa)

Purchased: 2012

Classification: HED achondrite (Eucrite, polymict)

Petrography: The meteorite displays a fresh greyish interior with easily discernable basaltic and dark melt clasts set in a fine-grained groundmass. Some larger pyroxene fragments also occur. The matrix is intensely fracture and the meteorite shows strong shock effects, e.g. plagioclase is partly to totally converted into maskelynite.

Geochemistry: opx: Fs25.1-41.7Wo1.9-3.1; FeO/MnO=30-38; cpx: Fs16.2-21.1Wo35.9-45.2; FeO/MnO=23-27

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2012
Mass (g):90
Pieces:1
Class:Eucrite-pmict
Shock stage:strong
Weathering grade:low
Ferrosilite (mol%):25.1-41.7; 16.2-21.1
Wollastonite (mol%):1.9-3.1; 35.9-45.2
Classifier:A. Greshake, MNB
Type spec mass (g):18.0
Type spec location:MNB
Main mass:Marcin Cimala
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. 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)
Woreczko Jan & Wadi      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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