No. Obsidian is just one of many types of volcanic rock.
Volcanic rock.
The common name for obsidian rock is volcanic glass.
obsidian
Obsidian
No, obsidian is volcanic glass.
Obsidian is an extrusive felsic igneous rock.
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.
Siliceous volcanic glass is also known as obsidian.
Obsidian, basalt, andesite, pumice.
Most often it would be obsidian.