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Northwest Africa 7780
Basic information Name: Northwest Africa 7780
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7780
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 26.9 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 7780 (NWA 7780)

Morocco

Purchased: 2012

Classification: HED achondrite (Eucrite)

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

Physical characteristics: Single stone, with black fusion crust, some weathering cracks, saw cut reveals fresh, light gray color, very fine-grained texture.

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

Geochemistry: (C. Agee and L. Burkemper, UNM): Pyroxene range Fs61.3-25.7Wo1.7-44.1, Fe/Mn=31±1 n=31, plagioclase Or0.4±0.1Ab9.3±1.2An90.3±1.3, n=5.

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

Specimens: 5.4 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):26.9
Pieces:1
Class:Eucrite
Ferrosilite (mol%):61.3-25.7
Wollastonite (mol%):1.7-44.1
Classifier:C. Agee, UNM
Type spec mass (g):5.4
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:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1459 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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