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Northwest Africa 6968
Basic information Name: Northwest Africa 6968
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6968
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 119 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 167 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 24 Sep 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 6968 (NWA 6968)

(Northwest Africa)

Purchased: 2011

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was bought in 2011 from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: The meteorite displays a light-grayish interior and is partly covered by fusion crust.

Petrography: The meteorite is a fine-grained breccia composed of lithic and mineral clasts up to 0.5 mm in size set into a clastic groundmass. Lithic clasts are basaltic and impact melt fragments. Dominant minerals are exsolved pyroxenes and calcic plagioclase. Minor phases include silica, chromite, zircon and pyrrhotite.

Geochemistry: low-Ca pyroxene: Fs59.2±1.6Wo4.1±2.1 (Fs56.3-60.9Wo1.8-8.2, n=7, FeO/MnO=28-30); Ca-pyroxene: Fs29.9±2.3Wo40.0±2.2 (Fs26.5-37.3Wo32.7-43.1, n=24, FeO/MnO=26-33); calcic plagioclase: An87.6±2.1 (An82.2-89.7, n=20)

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2011
Mass (g):119
Pieces:1
Class:Eucrite-br
Shock stage:moderate
Weathering grade:moderate
Ferrosilite (mol%):59.2; 29.9
Wollastonite (mol%):4.1; 40.0
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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