Rhyolite and Obsidian Definition

Definition of Rhyolite and Obsidian

The general Rhyolite and Obsidian definition can be stated as: Rhyolite is a fine-grained igneous rock which is rich in silica. On the other hand, Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Along with definition of Rhyolite and Obsidian, get to know about Properties of Rhyolite and Obsidian. Get to know more information about Rhyolite and Obsidian origin and discoverer, etymology and class.

History of Rhyolite and Obsidian

The history of Rhyolite and Obsidian gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Rhyolite and Obsidian Origin and Discoverer

Rhyolite and Obsidian definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Rhyolite and Obsidian. In this section, you will know about Rhyolite and Obsidian Origin and Discoverer. Origin of Rhyolite is North America whereas Origin of Obsidian is Ethiopia. It is interesting to know the name of Rhyolite and Obsidian discoverer. The Discoverer of Rhyolite is Ferdinand von Richthofen and the discoverer of Obsidian is Obsius.

Etymology of Rhyolite and Obsidian

Along with Rhyolite and Obsidian definition, know more about the etymology of Rhyolite and Obsidian. Etymology of Rhyolite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Rhyolite and Formation of Obsidian. The etymology of Rhyolite is From German Rhyolit, from Greek rhuax lava stream + lithos stone while that of Obsidian is From German Rhyolit, from Greek rhuax lava stream + lithos stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyolite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Rhyolite and Obsidian are listed below.

For Rhyolite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Coarse grained rock and Opaque rock

For Obsidian,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Opaque rock