Obsidian Definition
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth 0
From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius 0
Durable Rock, Medium Hardness Rock 0
Define Obsidian
Obsidian is one of the important type of rocks. If we have to define Obsidian in general, Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Obsidian comes under . All Igneous Rocks have similar properties and formation process. Along with Obsidian Definition, know more about the History of Obsidian, Etymology of Obsidian in next sections.