fulgur

navigate by keyword : are classified clumps commonly debris discharges form fossilized fulgur fulgurites fused ground known latin lechatelierite lightning masses meaning mineraloid natural organic other rock sand sediments sintered soil sometimes that tubes variety vitrified when

Fulgurites, where lightning has struck sand

Fulgurites from the Latin fulgur, meaning `lightning`, commonly known as `fossilized lightning`, are natural tubes, clumps, or masses of sintered, vitrified, and/or fused soil, sand, rock, organic debris and other sediments that sometimes form when lightning discharges into ground. Fulgurites are classified as a variety of the mineraloid lechatelierite. Sand sculptures