Northwest Africa 13446 (NWA 13446) Algeria Classification: Ungrouped achondrite History: Purportedly found in Algeria and purchased by Habib Naji in June 2020 from a dealer in Adrar, Algeria. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The specimen has an igneous cumulate texture and consists predominantly of zoned olivine (~90 vol.%) with intercumulus assemblages composed of low-Ca pyroxene (mostly pigeonite), subcalcic augite and sodic plagioclase-like glass with accessory chromite, troilite and very rare spherical grains of metal (kamacite and taenite). Classification: Achondrite (igneous, ultramafic, ungrouped). This specimen is an almost metal-free, olivine-dominated igneous achondrite with oxygen isotope affinities to L chondrites. Olivine exhibits compositional zoning from core values typical of H chondrites to rim values more typical of L chondrites, and intercumulus pyroxene also exhibits zoning from pigeonite cores to subcalcic augite rims.