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6. The Petrified Lightning of Fulgurites
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A fulgurite is a naturally occurring glass formation produced when lightning strikes sand or some kinds of rock. Sometimes referred to as "petrified lightning," these amazing constructions provide a rare window into the great force of electrical discharges. Although most fulgurites are a dismal grey or black hue, occasionally under particular circumstances blue fulgurites can develop. Both researchers and collectors value these uncommon blue specimens rather highly. Usually, the blue hue of fulgurites results from the presence of some elements in the soil, such copper or phosphorous, which become mixed into the glass construction following the lightning strike. By means of blue fulgurites, one can gain important understanding of soil composition and lightning behaviour in various geological environments. Furthermore, these naturally occurring glass crystals provide a physical record of lightning strikes that lets researchers examine past storm patterns and strength. Blue fulgurites inspire us of the transforming force of lightning and its capacity to leave enduring traces on the surface of our earth.
