Like other igneous rocks, the glossy glass originates from molten rock that has been spewed out from the bowels of the Earth via volcanoes. Before we get into the snowflakes, obsidian is formed ...

The scratches visible on the flaked base, or flute, of this obsidian point revealed a residue ... many points can be traced to a particular rock formation or region, the original home of this ...

Obsidian is an important resource for crafting items like Polymer in Ark Fjordur. This resource is harvested from shiny black rocks on the mountaintops throughout the Fjordur map. Finding obsidian ...

Extrusive igneous rocks are formed by magma that has erupted onto the surface as lava and then cooled quickly. Obsidian is an example of an extrusive igneous rock. Obsidian has crystals which are ...