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Northwest Africa 7779
Basic information Name: Northwest Africa 7779
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7779
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 49.3 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 459 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 27 Apr 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7779 (NWA 7779)

Morocco

Purchased: 2012

Classification: HED achondrite (Eucrite)

History: Purchased by Sean Tutorow from a Moroccan meteorite dealer in 2012

Physical characteristics: Single stone, with fresh black fusion crust, sawn surface reveals fresh, light-gray to tan colored, fine-grained texture.

Petrography: (C. Agee, UNM): Microprobe examination of a polished mount shows a pyroxene-plagioclase protogranular texture, pyroxenes have exsolution lamellae. Accessory silica, chromite, and troilite.

Geochemistry: (C. Agee and L. Burkemper, UNM): Low Ca-pyroxene Fs59.0±1.7Wo3.7±1.7, Fe/Mn=31±1 n=22, augite Fs25.9±3.3Wo42.8±1.6, Fe/Mn=31±2, n=10, plagioclase Or0.6±0.1Ab10.7±0.3An88.6±0.3, n=5.

Classification: Achondrite (eucrite). Equilibrated main group eucrite.

Specimens: 10 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012
Mass (g):49.3
Pieces:1
Class:Eucrite
Ferrosilite (mol%):59.0±1.7, 25.9±3
Wollastonite (mol%):3.7±1.7, 42.8±1.6
Classifier:C. Agee, UNM
Type spec mass (g):10
Type spec location:UNM
Main mass:Sean Tutorow
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 1460 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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