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8:28pm July 6, 2013
odditiesoflife: Sand Struck by Lightning The strange looking sand formation above is called a fulgurite. Also known as petrified lightning, fulgurites are formed when lightning instantaneously melts the mineral grains in sand and fuses the grains together. The result is a hollow glassy tube with a root-like appearance.The estimated temperature required to create a fulgurite varies, but it is believed to be between 1500 °C to 4000 °C.  Their size can range from just a few centimeters to several meters long. The longest fulgurite on record is 4.9 meters.  source 1, 2 photo by Ken Smith, National Geographic

odditiesoflife:

Sand Struck by Lightning

The strange looking sand formation above is called a fulgurite. Also known as petrified lightning, fulgurites are formed when lightning instantaneously melts the mineral grains in sand and fuses the grains together. The result is a hollow glassy tube with a root-like appearance.The estimated temperature required to create a fulgurite varies, but it is believed to be between 1500 °C to 4000 °C.  Their size can range from just a few centimeters to several meters long. The longest fulgurite on record is 4.9 meters. 

source 1, 2

photo by Ken Smith, National Geographic

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