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Impactite
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=== Impact melts === When a meteor strikes a planet's surface, the energy released from the impact can melt rock and regolith into a liquid. When the liquid cools it forms a solid known as an impact melt.<ref name=":0" /> If the liquid solidifies quickly before the atoms arrange into a [[crystal lattice]], it forms an impact [[glass]]. Impact glass can be dark brown, almost black, and partly transparent.<ref>{{Cite web|last=Temming|first=Maria|title=Exotic Glass Could Help Unravel Mysteries of Mars|website=[[Scientific American]]|url=http://www.scientificamerican.com/article/exotic-glass-could-help-unravel-mysteries-of-mars/|access-date=2015-06-15}}</ref> Sometimes, the cooled liquid does form a crystal structure. In that case, it would still be considered an impact melt, but not an impact glass.<ref name=":0" /> ==== Tektites ==== {{Main|Tektite}} Tektites are a rare kind of impact glass.<ref>{{Citation |last=Koeberl |first=Christian |title=Tektites |date=2024-05-22 |work=Oxford Research Encyclopedia of Planetary Science |url=https://oxfordre.com/planetaryscience/display/10.1093/acrefore/9780190647926.001.0001/acrefore-9780190647926-e-263 |access-date=2025-05-11 |language=en |doi=10.1093/acrefore/9780190647926.013.263 |isbn=978-0-19-064792-6|url-access=subscription }}</ref>
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