What is a Fulgurite?
by Geethalakshmi[ Edit ] 2010-01-03 15:50:12
What is a Fulgurite?
Fulgurite is the name for fossilized lightning. They are natural hollow glass tubes formed in quartzose sand, or silica, or soil by lightning strikes and are formed when lightning with a temperature of at least 1,800 degrees Celsius instantaneously melts silica on a conductive surface and fuses grains together.
