Quasicrystal formation and asteroid collision

Researchers report the synthesis of quasicrystals, which are solids with nonrepeating atomic configurations that have symmetries not seen in ordinary crystals and which have been found to occur naturally only in the Khatyrka meteorite, using an experimental shock designed to mimic collisions between extraterrestrial bodies; though the findings demonstrate that quasicrystals can form during a shock event, they do not identify a conclusive mechanism for their formation in nature. - Read at PNAS.org

Article #16-00321: “Shock synthesis of quasicrystals with implications for their origin in asteroid collisions,” by Paul D. Asimow et al.