Lunar Meteorite

Aridal 017



Aridel 017

(Image credit: David Gregory)


from The Meteoritical Bulletin, No. 107

Aridal 017

Rio de Oro, Western Sahara
Purchased: 2016 September
Mass: 590 g

Lunar meteorite (feldspathic breccia)

History: Found in Morocco in sandy soil, several meters from the find site for Northwest Africa 10608 (which was found earlier by desert truffle hunters). The stone was purchased by Dr. David Gregory in September 2016 from a Moroccan dealer at the Denver Show.

Physical characteristics: A single grayish stone (590 g) lacking fusion crust but with a glossy external patina. The fresh interior consists of small whitish clasts in a dark-gray matrix.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular mineral clasts of anorthite, olivine, orthopyroxene, pigeonite, ferropigeonite, augite, silica polymorph, TI-chromite and ilmenite (with rare inclusions of baddeleyite) in a fine grained matrix of the same minerals plus minor kamacite, troilite and K-bearing glass.

Geochemistry: Olivine (Fa10.1-27.0, FeO/MnO = 74-106, N = 3), orthopyroxene (Fs20.9Wo4.5, FeO/MnO = 51), pigeonite (Fs21.7Wo­, FeO/MnO = 54), ferropigeonite (Fs63.1Wo18.5, FeO/MnO = 72), augite (Fs17.3Wo40.5, FeO/MnO = 46), anorthite (An95.2-95.4Or0.5, N = 2).

Classification: Lunar (feldspathic regolith breccia). This stone was found at the same place as Northwest Africa 10608 and probably is paired with it.

Specimens: 10.1 g including one polished endcut at UWB; 10.1 g at ROM; main mass with Gregory.


Randy Says…

I don’t have a sample of this one. 


More Information

Meteoritical Bulletin Database

Aridal 017



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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
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Last revised: 28 February 2018