Lechatelierite var. Fulgurite ("frozen lightning")

Item Description

A fulgurite is formed when lightning flashes into sand or rock and literally melts the sand or rock around the impact site into a glass cast following the shape of the electrical discharge. Obviously, large fulgurites, being thin-walled, and hollow and elongated as they are, are fragile and hard to obtain. This is a fairly good-sized specimen, though, and from THE classic locality for the material that I first was fascinated by as a kid. MINDAT gives a unique name to these fused silica impressions of lightning, as : Lechatelierite