Petrified Lightning - 1.78" Saharan Fulgurite toothandclaw and the Cavern Club Beatles

and the Cavern Club Beatles Brick from the venue the Fab Four used to play

Less than a year after the Golden Gate Bridge opened to the public

but they said

This relatively simple pattern was the standard in Europe for hundreds of years

gravity should separate these materials due to their varied densities

Petrified Lightning - 1.78" Saharan Fulgurite toothandclaw and the Cavern Club BeatlesAbove: 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 1. 78" fulgurite collected in the Sahara Desert. Originally