Is Obsidian a Volcanic Rock?

Obsidian is a natural glass that forms from rapidly cooling lava. It is an igneous rock that crystallizes so rapidly from molten lava that atoms are unable to arrange themselves into a crystalline structure. This cools the lava into a volcanic glass with an amorphous structure known as obsidian. So yes, obsidian is very much […]

Where is Volcanic Rock Found?

Volcanic rock is formed from magma, molten material beneath the Earth’s surface that erupts through cracks or fissures onto the surface as lava or volcanic ash. The minerals and glass in the lava or ash crystallize and solidify into volcanic rock. So volcanic rock is found wherever volcanoes currently exist or existed in the past. […]

What Is The Rarest Volcanic Rocks?

Volcanic rocks form when magma (molten rock) cools and solidifies. The type of volcanic rock that forms depends on the chemical composition of the magma and how quickly it cools. While basalt and pumice are relatively common volcanic rocks, others are quite rare. Here are some of the rarest volcanic rocks found on Earth: Kimberlite […]

What Are The 3 Types of Volcanic Rock?

Volcanic rocks are formed from magma (molten rock) that has cooled and solidified. The characteristics of the resulting rock depend on the composition of the magma and the way it cooled. There are 3 main types of volcanic rock: Igneous Rocks Igneous rocks are formed when magma cools slowly underground or lava cools slowly on […]