Ordinary chondrite, L5 melt breccia
Found in Northwest Africa, 2011
Northwest Africa 7457 is classified as L5 melt breccia, a material formed when extreme pressure and heat generated by a significant impact partially melts the parent rock. These meteorites show a deformed and melted matrix as a result of the collision. The total known weight of this rare meteorite is only 15.5 kilograms.