by high-voltage discharges, such as lightning.

Description

Fulgurites are formed when lightning strikes the ground, fusing and vitrifying mineral grains. The primary SiO₂ phase in common tube fulgurites is lechatelierite, an amorphous silica glass. Many fulgurites show some evidence of crystallization: in addition to glasses, many are partially protocrystalline or microcrystalline.

1.Previous
3.Next