Lunar Meteorite: Touat 008

Four of the Touat 008 stones. Photo credit: Mbark Arjdal 
A small Touat 008 stone with a hole and an endcut. Photo credit: Mbark Arjdal 

from The Meteoritical Bulletin, No. 112

Touat 008

Adrar, Algeria
Find: 2023 February
Mass: 2955 g (many pieces)

Lunar meteorite (troctolitic melt breccia)

History: Found in Algeria in February 2023 and purchased from the finder by Mbark Arjdal in February and May 2023.

Petrography: (A. Irving, UWS, and P. Carpenter,  WUSL) Breccia dominated by mineral debris and some lithic clasts related to troctolitic lithologies. Mean grainsize is ~100 µm. Portions of the very fine grained matrix exhibit fluidal textures and contain sparse vesicles. Accessory phases include Cr-bearing pleonaste, troilite (commonly altered to secondary barite), low-Ti chromite and calcite (as patchy secondary alteration of plagioclase).

Geochemistry: Anorthite (An95.9-96.8Or0.1-0.0, N = 4), olivine (Fa20.0-24.0, FeO/MnO = 74-89, N = 5), pigeonite (Fs19.4-19.9Wo5.0-6.9, FeO/MnO = 42-55, N = 4), subcalcic augite (Fs13.0Wo34.4, FeO/MnO = 40; Fs27.5Wo21.7, FeO/MnO = 51; Fs43.9Wo29.2, FeO/MnO = 63; N = 3).

Classification: Lunar (troctolitic melt breccia). This material is similar in many respects to Rafsa 002.

Specimens: 45.3 g including a polished endcut at UWB; remainder with Mr. M. Arjdal.

Randy Says…

I have not studied Touat 008. The reported find location of Touat 008 is 29 km west of Touat 004 and 73 km southeast of Touat 005 so I assume Touat 008 is not paired with the other Touat lunar meteorites.

More Information

Meteoritical Bulletin Database

Touat 008