Lunar Meteorite

Northwest Africa 11966

northwestern Africa


from The Meteoritical Bulletin, No. 107


Northwest Africa 11966


Northwestern Africa

Purchased: 2015

Mass: 157.13 g


Lunar Meteorite (feldspathic breccia)


History: Purchased by Jay Piatek on April 27, 2015 from a Moroccan meteorite dealer.


Physical characteristics: Single stone, fresh fusion-crusted exterior. A saw cut reveals a fragmental breccia with many white feldspathic clasts and a large lithic clast set in a dark-gray groundmass.


Petrography: (C. Agee, UNM) This meteorite is a breccia of fragmental pyroxene, olivine, plagioclase grains. There are many domains that are fine-grained and cataclastic with shock melt and vesicles.


Geochemistry: (C. Agee, UNM) olivine Fa35.8±5.0, Fe/Mn=98±11, n=10; pigeonite Fs33.6±5.3Wo12.6±6.8, Fe/Mn=58±3, n=8; augite Fs29.0±2.9Wo34.8±4.3, Fe/Mn=57±1, n=2; plagioclase An96.4±0.9, n=7; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO2=43.4±0.4, TiO2=0.18±0.06, Al2O3=31.0±1.2, Cr2O3=0.06±0.03, MgO=3.0±0.6, FeO=3.6±0.8, MnO=0.05±0.03, CaO=17.5±0.5, Na2O=0.35±0.04, K2O=0.07±0.02 (all wt%), n=7.


Classification: Lunar feldspathic breccia


Specimens: 20.1 g including a probe mount on deposit at UNM, Jay Piatek holds the main mass.


Randy Says…

I have not studied this one.


More Information

Meteoritical Bulletin Database

NWA 11966




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Prepared by: Randy L. Korotev

Department of Earth and Planetary Sciences
Washington University in St. Louis

Please don’t contact me about the meteorite you think that
you’ve found until you read this and this.



Last revised: 25 November 2018