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Northwest Africa 6916
Basic information Name: Northwest Africa 6916
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6916
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 520 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 443 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 29 Nov 2011
Writeuphelp
Writeup from MB 100:

Northwest Africa 6916 (NWA 6916)

Northwest Africa

Purchased: Apr 2011

Classification: HED achondrite (Eucrite)

Petrography: Large clasts of medium-grained, ophitic-textured eucrite within a matrix of recrystallized eucrite minerals (mostly exsolved pigeonite and calcic plagioclase) exhibiting polygonal grain boundaries.

Geochemistry: Pigeonite host Fs58.7-58.8Wo6.0, FeO/MnO=31-34, augite exsolution lamellae Fs28.9-29.3Wo42.0-41.2, FeO/MnO=33-35.

Data from:
  MB100
  Table 1
  Line 1536:
Place of purchase:Bruegg, Switzerland
Date:P Apr 2011
Mass (g):520
Pieces:1
Class:Eucrite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):58.7-58.8; 28.9-29.3
Wollastonite (mol%):6.0; 42.0-41.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.6
Type spec location:UWS
Main mass:M. Jost
Comments:SJS 11004; 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)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)
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 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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