The size of an average sized head
Obsidian is part of the Granite family of igneous rocks.
Obsidian is formed from very rapidly cooling lava.
No. Pumice and obsidian are rocks composed mostly of glass.
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.
Obsidian and Basalt are both Igneous rocks. They are made from hardened lava from volcanoes.
Obsidian is part of the Granite family of igneous rocks.
obsidian obsidian
because an obsidian rock has low silica
Obsidian is black glass formed by volcanoes.
Igneous rocks
Obsidian
obsidian
Obsidian is formed from very rapidly cooling lava.
Obsidian and coal are both rocks and they are formed by lava
No. Pumice and obsidian are rocks composed mostly of glass.
obsidian rocks are red and black also sometimes orange
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.