No. Obsidian is just one of many types of volcanic rock.
Volcanic rock.
Obsidian is a naturally occurring volcanic form of glass.
obsidian
Volcanic glass, or pumice (vesicular obsidian).
Obsidian
No, obsidian is volcanic glass.
Obsidian is an extrusive felsic igneous rock.
Obsidian is a volcanic or igneous rock. It is formed when lava dries up.
No. Obsidian is volcanic glass. Glass is amorphous and thus noncrystalline.
Yes, obsidian is found near volcanic mountains.
Obsidian falls under the group of Extrusive Volcanic Rock of very fine texture. Obsidian is generally called Volcanic Glass.
the parent rock of obsidian is magma, because it is made from quickly-cooling magma after a volcanic eruption.