Petrified Lightning - SOLD 2.780" Saharan Fulgurite sharks 545" fulgurite collected in the

545" fulgurite collected in the Sahara Desert

179" Dendraster gibbsii from the San Joaquin Valley deposit

185" and was recovered from the Black Sea

which blocks blue and near-UV spectral frequencies

Petrified Lightning - SOLD 2.780" Saharan Fulgurite sharks 545" fulgurite collected in theAbove: Front of the Specimen Card. When lightning strikes dry sand, the intense heat melts and fuses the silica creating tubes of rough glass called fulgurites. The process happens quickly, often trapping molecules from the surrounding atmosphere inside the walls of the impact tube. These natural time capsules allow scientists to study the composition of ancient climates. This specimen is a 2. 780" fulgurite collected in the Sahara Desert. Originally