Lunar Meteorite

Northwest Africa 12279



from The Meteoritical Bulletin, No. 107


Northwest Africa 12279


Tindouf, Algeria

Purchased: 2016 October 10

Mass: 1830 g


Lunar Meteorite (feldspathic breccia)


History: The meteorite was purchased in Denver USA by Zhouping Guo and Guobing Zhong on September, 2017 from Adam Aaronson.


Physical characteristics: A single bulk specimen, with sepia fresh fusion crust and low weathering degree. A large impact molten mass was observed in the specimen.


Petrography: This lunar meteorite comprises two petrographic areas: impact melt breccia and anorthosite. The anorthosite includes forsterite, pigeonite, low-Ca pyroxene, plagioclase and minor minerals such as ilmenite, chromite, quartz and other opaque minerals. It has a subophitic structure. The impact-melt breccia contains various types of lithic clasts (anorthosite, olivine-gabbro, gabbro), mineral and glassy fragments. The matrix consists of very fine-grained, cryptocrystalline (~0.1mm) and vitric particles with sporadic small vesicles.


Geochemistry: (J.K. Zhou, H.Y. Chen, Z.P. Xia, Guilin University of Technology, China): Olivine, Fa12.8-46.3Fo53.8-87.3, FeO/MnO=66.3-96.9 (n=29); Orthopyroxene, Fs15.5-32.2Wo2.98-4.22En64.9-80.3, Fe/Mn(mol)=54.5-69.3 (n=3); Pigeonite: Fs23.2-53.1Wo7.19-23.7En39.8-57.4, Fe/Mn(mol)=51.1-61.7 (n=6); Augite, Fs8.42-44.4Wo31.4-44.1En18.7-47.5, Fe/Mn(mol)=37.1-53.9 (n=14); Plagioclase: An92.9-98.5Or0.06-0.69 (n=15); Spinel: MgO, 20.1%-23.6%; Al2O3, 59.5%-69.2%; Cr2O3, 3.91%-6.00%; FeO,6.05%-7.46%.


Classification: Lunar (anorthositic impact-melt breccia)


Specimens: 30.2 g including one polished thin section are deposited in College of Earth Sciences, Guilin University of Technology, China; Remaining material with Guobing Zhong and Zhouping Guo


Randy Says…

I have not studied this one.


More Information

Meteoritical Bulletin Database

NWA 12279




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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: 17 December 2018