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Northwest Africa 11109
Basic information Name: Northwest Africa 11109
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11109
Observed fall: No
Year found: 2016
Country: Morocco
Mass:help 77 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 21 Feb 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11109 (NWA 11109)

Morocco

Find: 2016

Classification: Lunar meteorite

History: Purchased by Ke Zuokai in Dec. 2016 from a Moroccan dealer.

Physical characteristics: The meteorite has a black fusion crust and is partially covered with weathering products.

Petrography: Mineral fragments with minor lithic clasts (0.1 to 1.5 mm) set in a poorly recrystallized anorthositic matrix. Vesicular shock melt veins and pockets are present.The lithic clasts include rocks of anorthositic, gabbroic and noritic composition. Mineral fragments consists of pyroxene, olivine, plagioclase grains, and minor quartz grains. Other accessory minerals include chromite, ilmenite and troilite.

Geochemistry: Plagioclase An90.5-97.0Ab2.8-9.1Or0.4; pigeonite Fs23.1-57.0Wo4.9-21.2, Fe/Mn=46.6-74.6; augite Fs13.6-55.1Wo27.0-43.7, Fe/Mn=43.3-85.4; olivine Fa31.1-45.7, Fe/Mn=81.1-108.4.

Classification: Lunar, breccia

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Beijing
Date:2016
Mass (g):77
Pieces:10
Class:Lunar
Shock stage:moderate
Weathering grade:weak
Fayalite (mol%):36.9±4.1 (n=16)
Ferrosilite (mol%):34.7±12.5 (n=17); 30.5±16.3 (n=11)
Wollastonite (mol%):12.1±5.9 (n=17); 36.6±6.0 (n=11)
Classifier:Li Y., PMO
Type spec mass (g):16
Type spec location:PMO
Main mass:Ke Zuokai
Comments:Submitted by Hsu W.
Institutions
   and collections
PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 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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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1505 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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