Suevite

Suevite from the Nördlinger Ries impact crater (type locality)
Greenish suevite from an impact structure at Rochechouart, France
Suevite from an impact crater at Lahojsk, Belarus
Suevite from the Manicouagan impact structure, Quebec, Canada
A thick layer of suevite (light gray) over blocks of Bunte Breccia (here mostly made up of reddish clay)
Suevite breccia from Sudbury impact event. The largest clast in the lower left center is 9" across.
Portal to the town hall's stairway made of suevite in Nördlingen, Germany

Suevite is a rock consisting partly of melted material, typically forming a breccia containing glass and crystal or lithic fragments, formed during an impact event. It forms part of a group of rock types and structures that are known as impactites.