which has been created through a partial crystallization of the glass. Since it's born out of molten rock, obsidian is only found in volcanic regions of the world, including in parts of the United ...

As with other forms of obsidian, rainbow obsidian is both rock and glass. However ... which has a long history of volcanic activity. There are four mines in this region that, with a permit ...

Fragments from the brain of a man killed by the Mount Vesuvius eruption in the year 79 are smooth and shiny but still contain ...

Under the lamp, I suddenly saw small glassy remains glittering in the volcanic ash that filled the skull," Petrone said.

A young man's brain turned into glass during Mount Vesuvius’ 79 AD eruption. Scientists now study how extreme heat preserved ...

Scientists found glass fragments inside the skull of a young man who died in Herculaneum when Mt. Vesuvius exploded in 79 CE.

The center of the Earth is so hot that it could satisfy the entire world’s energy needs. But can scientists safely tap into ...

Along with volcanic ash, his brain and spinal cord ... The shards, or clasts, have a glassy luster, making them look a lot like obsidian, a glass formed from lava when it cools very quickly.

“Obsidian glass, that is a volcanic glass, forms when lava is very quickly cooled, for example, where it enters into water,” Giordano added. However, the pyroclastic flows, composed of fast ...