Fulgurites are natural tubes or crusts of glass that are formed through the fusion of silicia (quartz), sand, or rock from the impact of a lightning strike. Their shape mimics the path of the lightning bolt as it disperses into the ground. All lightning strikes that hit the ground are capable of forming fulgurites and fulgurites can all across the world, but are considered a rare occurrence.
Fulgurite #1 is .5" x 2.5" and weighs 13.8g, Fulgurite #2 is .5" x 2.5" and weighs 16g, Fulgurite #3 is .25" x 3" and weighs 10g, Fulgurite #4 is .5" x 2.75" and weighs 13g, Fulgurite #5 is .75" x 2.5" and weighs 22g.
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