mineral
Fulgurite
Fulgurite (Lechatelierite / Vitrified Sand)
AI-generated identification · may be incorrectHardness: 6-7 on Mohs scale. Color: Brown, gray, or tan. Luster: Vitreous to dull. Structure: Amorphous glass tubes.
- Hardness
- 6-7 on Mohs scale
- Color
- Brown, gray, or tan
- Luster
- Vitreous to dull
Identified More mineral →
Explore Fulgurite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 on Mohs scale. Color: Brown, gray, or tan. Luster: Vitreous to dull. Structure: Amorphous glass tubes.
Formation & geological history
Formed when a high-voltage lightning strike instantaneously melts and fuses loose sand or soil, typically occurring in desert or beach dunes.
Uses & applications
Valued by collectors and researchers studying ancient atmospheric conditions and lightning strikes.
Geological facts
Also known as 'fossilized lightning,' these fragile tubes can extend several meters underground.
Field identification & locations
Identify by its glassy, hollow interior and exterior coated with fused sand grains, found sandy environments worldwide.
