How Do You Find Fulgurites

Fulgurites form where lightning strikes, so it’s easiest to find them on mountain peaks, desert highlands, and beaches. Peaks known for fulgurites include the French Alps, Sierra Nevada range, Rocky Mountains, Pyrenees range, Cascades, and Wasatch range.

What does fulgurite look like?

Fulgurites are natural tubes or crusts of glass formed by the fusion of silica (quartz) sand or rock from a lightning strike. … They resemble roots or branching tube-like structures that have a rough surface, covered with partially melted sand grains.

Is fulgurite always hollow?

Fulgurites are very fragile, as they are hollow and have lots of air spaces. They can get longer than 10 feet, although most are a few inches. Since they trap air bubbles, old fulgurites can be used to study the composition of air in ancient times.