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Northwest Africa 7609
Basic information Name: Northwest Africa 7609
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7609
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 249 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 576 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 1 Jan 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7609 (NWA 7609)

Morocco

Purchased: August 2012

Classification: HED achondrite (Eucrite)

History: Purchased by Adam Bates from a Moroccan meteorite dealer, August, 2012.

Physical characteristics: Single fusion-crusted stone. Saw cuts and broken surfaces show friable, light gray, very fine grained texture, but also a few light-colored clasts up to 6mm, and sparse thin black melt-veins.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows approximately 60% pyroxene and 30% plagioclase, accessory silica, ilmenite-chromite intergrowths, troilite, and low-Ni iron metal. Pyroxene is pigeonitic, but some fine exsolution lamellae observed in BSE.

Geochemistry: (C. Agee and M. Spilde, UNM) Pigeonite Fs48.3±1.8Wo12.8±2.0, Fe/Mn=33±1, n=20; plagioclase Or0.7±0.1Ab11.8±1.4An87.6±1.5, n=3.

Classification: Achondrite, basaltic eucrite.

Specimens: 21.17 g including a probe mount on deposit at UNM, Adam Bates holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P August 2012
Mass (g):249
Pieces:1
Class:Eucrite
Ferrosilite (mol%):48.3±1.8
Wollastonite (mol%):12.8±2.0
Classifier:C. Agee
Type spec mass (g):21.17
Type spec location:UNM
Main mass:Adam Bates
Comments:Submitted by C. Agee
Institutions
   and collections		 UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1973 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater)

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