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Northwest Africa 6969
Basic information Name: Northwest Africa 6969
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6969
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 7 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 238 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 24 Sep 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 6969 (NWA 6969)

(Northwest Africa)

Purchased: 2011

Classification: HED achondrite (Eucrite, monomict)

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

Physical characteristics: The small meteorite shows a light-grayish interior and is crosscut by numerous black shock veins. It is partly covered by fusion crust.

Petrography: The meteorite is a basaltic breccia dominantly composed of up to 200 μm sized exsolved pyroxenes and lath-shaped calcic plagioclase. Minor phases are chromite, ilmenite and silica.

Geochemistry: low-Ca pyroxene: Fs59.7±1.0Wo2.5±0.9 (Fs75.4-61.0Wo2.0-4.7, n=13, FeO/MnO=28-33); Ca-pyroxene: Fs26.6±1.3Wo43.0±1.5 (Fs25.1-31.5Wo37.6-44.9, n=23, FeO/MnO=27-35); calcic plagioclase: An88.9±0.4 (An88.0-89.5, n=15)

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2011
Mass (g):7
Pieces:1
Class:Eucrite-mmict
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):59.7; 26.6
Wollastonite (mol%):2.5; 43.0
Classifier:A. Greshake, MNB
Type spec mass (g):1.6
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
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Andreas Grünemeyer   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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