Feb 10, 2012
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. I personally have about 5 pieces of
this and it is so amazing.
Read more about this Phenomenon here:
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