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Northwest Africa 11460
Basic information Name: Northwest Africa 11460
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11460
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 286 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Lunar
Recommended:  Lunar    [explanation]

This is 1 of 83 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 30 Oct 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11460 (NWA 11460)

(Northwest Africa)

Purchased: 2017

Classification: Lunar meteorite

History: The meteorite was bought from a Moroccan meteorite dealer at the meteorite fair in Ensisheim, France.

Physical characteristics: Several small, grayish individuals without fusion crust but adhering reddish Sahara sand.

Petrography: The meteorite is a polymict breccia composed of lithic and mineral clasts consolidated in a mostly molten and recrystallized matrix. The up to 1 cm sized lithic clasts are dominantly basaltic and gabbroic, mineral clasts include up to 200 μm sized olivine, exsolved pyroxene, and feldspar grains. Accessories are Ti-chromite, ilmenite, FeNi metal, fayalite, and barite.

Geochemistry: olivine: Fa31.6±9.7 (Fa17.9-55.7, n=26, FeO/MnO=66-112); low-Ca pyroxene: Fs29.2±11.7Wo4.0±1.1 (Fs14.1-50.8Wo2.8-6.5, n=14, FeO/MnO=47-65); Ca-pyroxene: Fs25.1±9.6Wo34.1±7.4 (Fs12.7-44.4Wo23.1-42.6, n=17, FeO/MnO=34-67); calcic plagioclase: An96.7±0.8 (An94.6-97.8, n=15)

Classification: Lunar (feldspathic breccia)

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Ensisheim, France
Date:P 2017
Mass (g):286
Pieces:several
Class:Lunar
Shock stage:moderate
Weathering grade:moderate
Fayalite (mol%):31.6
Ferrosilite (mol%):29.2; 25.1
Wollastonite (mol%):4.0; 34.1
Classifier:A. Greshake, MNB
Type spec mass (g):21
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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