Ore Tektite Asteroid On White Background Royalty-Free Stock Photo

Tektites from Greek τηκτός tēktós, `molten` are gravel-size bodies composed of black, green, brown or gray natural glass formed from terrestrial debris ejected during meteorite impacts. The term was coined by Austrian geologist Franz Eduard Suess 1867–1941, son of Eduard Suess. They generally range in size from millimeters to centimeters. Millimeters-size tektites are known as microtektites.