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Northwest Africa 6984
Basic information Name: Northwest Africa 6984
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6984
Observed fall: No
Year found: 2010
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 6984 (NWA 6984)

(Northwest Africa)

Purchased: 2010

Classification: HED achondrite (Eucrite, monomict)

History: The meteorite was bought in 2010 from a local meteorite dealer in Morocco.

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

Petrography: The meteorite is a monomict breccia displaying a basaltic texture of up to 1 mm sized exsolved pyroxenes and 1.5 mm sized calcic pagioclase. Minor phases include chromite, silica, pyrrhotite and ilmenite. Shock melt veins are abundant.

Geochemistry: low-Ca pyroxene: Fs57.7±1.4Wo3.2±1.7 (Fs55.5-59.1Wo1.6-5.9, n=7, FeO/MnO=29-32); Ca-pyroxene: Fs23.7±1.0Wo43.7±1.0 (Fs24.3-27.3Wo40.9-44.3, n=14, FeO/MnO=28-31); calcic plagioclase: An88.3±3.0 (An81.3-91.1, n=15)

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2010
Mass (g):7
Pieces:1
Class:Eucrite-mmict
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):57.7; 23.7
Wollastonite (mol%):3.2; 43.7
Classifier:A. Greshake, MNB
Type spec mass (g):1.6
Type spec location:MNB
Main mass:David Göttlich
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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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Geography: 
Coordinates:Unknown.

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

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