from The Meteoritical Bulletin, No. 111
Northwest Africa 15343 (NWA 15343)
History: Found by a nomad in summer 2021 near Hassi L’Hajar, which is approximatively 90 km from Ouargla, Algeria. Purchased by Stone gallery (The Netherlands), Michel van den Dries (Belgium) and anonymous in 2022. Several 5 to 30 g stones of the lot (totaling 493 g) were sold to another unknown buyer.
Physical Characteristics: The stones (from 7.2 to 783 g) have a dark brown and shiny, sand-blasted surface. The cut surface of the type specimen reveals a melt breccia with numerous <1 mm clasts embedded within a dark matrix. It appears fresh, with visible metal grains.
Petrography: (A. Bouvier, UBayr) Breccia consisting of a dark glassy matrix containing abundant sub-millimeter lithic clasts, which are mostly mineral fragments (olivine, pyroxene, plagioclase) as well as rarer mafic clasts (norite) found in the polished section. Fe-Ni metal, troilite, Cr-spinel, and chromite are also present.
Geochemistry: Olivine Fa29.2±4.8 with Fe/Mn=94±13 (n=18); Low-Ca pyroxene Fs18.0Wo3.4 (n=1); Pigeonite Fs32.5±4.4Wo13.3±5.7, Fe/Mn=51.2±4.6 (n=6); high-Ca pyroxene Fs21.4±10.0Wo39.1±3.0, Fe/Mn=53.4±4.3 (n=3); Plagioclase An96.5±1.1Or0.1±0.1 (n=23).
Classification: Lunar (melt breccia)
Specimens: 42.2 g including a polished mount at UBayr. Main mass (786 g) with Stone gallery (The Netherlands), other smaller masses with Stone gallery (The Netherlands), Michel van den Dries (Belgium) and anonymous.
I have not studied Northwest Africa 15343.
Meteoritical Bulletin Database