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Lunar Meteorite

Northwest Africa 8001

northwestern Africa

 

Sawn face of Northwest Africa 8001.  Click on image for enlargement.
(photo credit: Darryl Pitt)

 

NWA 8001 in the lab
(photo credit: Randy Korotev)

 

from The Meteoritical Bulletin, No. 102.

Northwest Africa 8001

(Northwest Africa)
Purchased: 2013 June
Mass: 23.4 g

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Darryl Pitt in June 2013 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Complex polymict breccia composed of angular mineral clasts, some mare basalt clasts and glass spheres in a fine grained matrix. Sparse grains of forsterite are present; other minerals are more ferroan olivine, low-Ca pyroxene, subcalcic augite, anorthite, ilmenite and troilite.

Geochemistry: Forsterite (Fa5.7-9.0; FeO/MnO = 91-104), ferroan olivine (Fa39.7-47.7; FeO/MnO = 89-95), low-Ca pyroxene (Fs31.2-33.5Wo5.6-3.9; FeO/MnO = 56-63), subcalcic augite (Fs17.2-44.4Wo36.5-26.6; FeO/MnO = 49-62), subcalcic ferroaugite (Fs58.8Wo33.4; FeO/MnO = 72), anorthite (An96.8-97.3Or0.1-0.2). Bulk composition (R. Korotev, WUSL): INAA of subsamples gave mean abundances of FeO 4.8 wt.%, and (in ppm) Sc 9, La 7.9, Sm 3.7, Eu 0.96, Yb 2.7, Th 1.3.

Classification: Lunar (mingled regolithic breccia). Olivine as magnesian as that present in this meteorite is unknown among other lunar specimens.

Specimens: 4.7 g and one polished thin section are at UWB. The remainder is with DPitt.

 

Randy Says…

It’s compositionally unique.

 

More Information

Meteoritical Bulletin Database

NWA 8001

References

Korotev R. L. and Irving A. J. (2014) Keeping up with the lunar meteorites — 2014 (abstract). 45th Lunar and Planetary Science Conference, abstract no. 1405.

Kuehner S. M., Irving A. J., and Korotev R. L. (2014) Petrology and composition of lunar felsic granulitic breccia Northwest Africa 8022 and occurrence of forsterite in lunar breccia NWA 8001 (abstract). 45th Lunar and Planetary Science Conference, abstract no. 2495.

 

 

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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 you've found until you read this and this.


e-mail
korotev@wustl.edu

Last revised: 15-Oct-2015