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Northwest Africa 7914
Basic information Name: Northwest Africa 7914
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7914
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 268 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 230 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 27 Jul 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7914 (NWA 7914)

Morocco

Purchased: 2013

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Adam Bates from a Moroccan meteorite dealer in 2013.

Physical characteristics: Single stone, black fusion crust, saw cut reveals brecciated texture with pyroxene- and plagioclase-rich clasts, most 1-3 mm, but also scattered cm-sized clasts, set in gray groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows domains with abundant mesostasis, quench crystals, and zoned pyroxene phenocrysts, while other domains are composed of clastic or brecciated textures with ~1 mm plagioclase and pyroxenes. Ubiquitous silica, chromite, ilmenite, and low-Ni iron metal.

Geochemistry: (C. Agee and L. Burkemper, UNM) EMPA. Low Ca-pyroxene Fs45.7±5.3Wo2.6±0.5, Fe/Mn=34±1, n=19; augite Fs19.1Wo42.5, Fe/Mn=30; plagioclase An91.6±1.0, n=3.

Classification: Achondrite (eucrite, monomict), unequilbrated eucrite, low-Ca pyroxenes show Fe-enrichment trend.

Specimens: 20.5 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 2013
Mass (g):268
Pieces:1
Class:Eucrite-mmict
Ferrosilite (mol%):45.7±5.3
Wollastonite (mol%):2.6±0.5
Classifier:C. Agee, UNM
Type spec mass (g):20.5
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 1438 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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