Obsidian

Obsidian tools from Tilkitepe, Turkey, 5th millennium BC.

Obsidian is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. It is hard, brittle, and amorphous, and it is an igneous rock. Obsidian has been used to craft cutting and piercing tools.

Uses

See also: Knife

See also: Bow and arrow

See also: Spear

Obsidian can be used as a material for crafting knives, as well as for a spear's head or arrowheads.

See also

• Chisel
• Knife
• Spear

References

This article uses material from the Wikipedia article Obsidian, which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors).