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Northwest Africa 11515
Basic information Name: Northwest Africa 11515
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11515
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 330 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Lunar
Recommended:  Lunar    [explanation]

This is 1 of 89 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 6 Dec 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11515 (NWA 11515)

(Northwest Africa)

Purchased: 2017

Classification: Lunar meteorite

History: The fragments were bought from a local meteorite dealer in Morocco.

Physical characteristics: Several greyish fragments lacking any fusion crust and partly covered by reddish Sahara sand.

Petrography: Feldspathic breccia consisting of lithic and mineral clasts set into a partly glassy or recrystallized matrix often showing flow structures. Lithic clasts include up to 1.2 mm sized angular to subrounded basaltic, noritic, and gabbroic types; mineral clasts are feldspar, olivine, and exsolved pyroxenes. Minor phases are Ti-chromite, ilmenite, troilite, FeNi metal, metallic iron and fayalite. Some cracks are filled with calcite due to terrestrial weathering.

Geochemistry: olivine: Fa33.6±12.5 (Fa19.2-54.1, n=16, FeO/MnO=72-119); low-Ca pyroxene: Fs43.3±4.8Wo4.5±1.3 (Fs31.2-48.8Wo3.0-7.7, n=17, FeO/MnO=53-67); Ca-pyroxene: Fs24.4±3.1Wo31.9±9.3 (Fs12.7-44.4Wo20.3-27.5, n=10, FeO/MnO=52-76); calcic plagioclase: An96.2±1.1 (An92.8-97.5, n=15)

Classification: Lunar (feldspathic breccia)

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2017
Mass (g):330
Pieces:many
Class:Lunar
Shock stage:moderate
Weathering grade:moderate
Fayalite (mol%):33.6
Ferrosilite (mol%):43.3; 24.4
Wollastonite (mol%):4.5; 31.9
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Martin Goff
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 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
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Stelvino   
Geography: 
Coordinates:Unknown.

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

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