stones
Obsidian is a naturally occurring volcanic form of glass.
Obsidian is an igneous rock.
Obsidian is in the Igneous rock group.
how can a blue obsidian rock be blue
No. Obsidian is volcanic glass. Glass is amorphous and thus noncrystalline.
No. Obsidian is just one of many types of volcanic rock.
Volcanic rock.
Obsidian is an extrusive felsic igneous rock.
Obsidian and Granite are both igneous rocks so unless the Obsidian rock goes back into the magma and cools slower it can possibly form into granite.
Obsidian is a volcanic or igneous rock. It is formed when lava dries up.
Granite is a coarse grained igneous rock without Pyroxene.
obsidian obsidian