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Northwest Africa 6914
Basic information Name: Northwest Africa 6914
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6914
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 40.2 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 400 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 29 Nov 2011
Writeuphelp
Writeup from MB 100:

Northwest Africa 6914 (NWA 6914)

Northwest Africa

Purchased: Feb 2011

Classification: HED achondrite (Eucrite, polymict)

Petrography: Fragmental breccia composed of crystal and lithic debris from cumulate and ophitic eucrites. Minerals include several types of exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite, troilite, chromite, Ti-chromite, Ni-free metal and fayalite.

Geochemistry: One type of exsolved pigeonite has lamellae of relatively ferroan augite (Fs27.4Wo42.1, FeO/MnO=28) within host orthopyroxene (Fs60.3Wo2.6, FeO/MnO=31), and another type has more magnesian augite (Fs13.8Wo43.3, FeO/MnO=21) within host orthopyroxene (Fs33.5Wo2.6, FeO/MnO=25).

Data from:
  MB100
  Table 1
  Line 1534:
Place of purchase:Tucson
Date:P Feb 2011
Mass (g):40.22
Pieces:1
Class:Eucrite-pmict
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):60.3; 27.4
Wollastonite (mol%):2.6; 42.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):8.5
Type spec location:UWS
Main mass:MMartin
Comments:MM11-4; submitted by A. Irving
Institutions
   and collections		 UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
MMartin: P.O. Box 164, Kaaawa, HI 96730, United States; Website (private address; updated 14 Jul 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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