mineral
Fulgurite
Lechatelierite (silica glass tubes)
AI-generated identification · may be incorrectHardness of 5.5 to 6 on the Mohs scale, typically gray or brown with a glassy or rough luster, amorphous crystal structure.
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Physical properties
Hardness of 5.5 to 6 on the Mohs scale, typically gray or brown with a glassy or rough luster, amorphous crystal structure.
Formation & geological history
Formed when a high-voltage lightning strike hits silica-rich sand or soil, instantly melting the material within seconds.
Uses & applications
Used by mineral collectors, educational displays, and as unique jewelry centerpieces.
Geological facts
Fulgurites are often referred to as 'fossilized lightning' and can reach several meters deep into the earth.
Field identification & locations
Found in sandy deserts and beaches worldwide; identified by its hollow, glassy interior and fused sandy exterior.
