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Northwest Africa 12666
Basic information Name: Northwest Africa 12666
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12666
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 85.2 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 431 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 27 Jun 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12666 (NWA 12666)

(Northwest Africa)

Purchased: 2010

Classification: HED achondrite (Eucrite)

History: The meteorite was purchased from a local meteorite dealer in Agadir, Morocco.

Physical characteristics: Dark-grayish individual partly covered with fusion crust.

Petrography: The meteorite is a breccia with up to 1 cm sized basaltic and black melt clasts set into a clastic mineral matrix. Dominant minerals are exsolved pyroxene and calcic plagioclase with average grain sizes of about 150 μm. Minor phases include silica, chromite, FeS, ilmenite, and metallic Fe.

Geochemistry: low-Ca pyroxene: Fs60.9±0.5Wo1.9±0.2 (Fs59.7-61.6Wo1.7-2.2, n=15, FeO/MnO=28-32); Ca-pyroxene: Fs25.8±0.8Wo42.6±0.9 (Fs24.9-28.0Wo40.8-44.2, n=16, FeO/MnO=27-32); calcic plagioclase: An88.4±3.0 (An84.9-93.5, n=14)

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Agadir, Morocco
Date:P 2010
Mass (g):85.2
Pieces:1
Class:Eucrite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):60.9; 25.8
Wollastonite (mol%):1.9; 42.6
Classifier:A. Greshake, MNB
Type spec mass (g):17.5
Type spec location:MNB
Main mass:R. Lenssen
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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