Classification: LL6 melt breccia S2/W 0/1
Time/Place: 2018 in Mauritania
History: Purchased by Aziz Habibi in November 2018 from a Mauritanian dealer.
Petrography: (A. Irving and S. Kuehner, UWS) Relatively fresh, shock-modified breccia consisting of clasts of petrographic type 6 and shock stage S1 (largely recrystallized with rare chondrule remnants and stained metal) in a very fine grained to glassy matrix (black to cinnamon-brown in thin section).
Geochemistry: Olivine (Fa30.8-31.2, N = 3), orthopyroxene (Fs25.1-25.5Wo2.2-1.6, N = 3), clinopyroxene (Fs10.5-10.6Wo42.9-42.7, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.95.
NOTE: I hold whole mass 16kg. It was cut into full slices, and this is one of the smallest