Classification: LL6 melt breccia S2 W0/1
Place/Time: 2018 in Mauritania
Mass: 16 kg
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.
Full slice from 14.5kg main mass, one side mirror polished and another on 400 grid powder (mat finish), coated in paraloid. Slice is 4.3mm thick.