Quartzite and Obsidian Definition

Definition of Quartzite and Obsidian

The general Quartzite and Obsidian definition can be stated as: Quartzite is a non-foliated metamorphic rock that forms by the metamorphism of pure quartz Sandstone. 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 Quartzite and Obsidian, get to know about Properties of Quartzite and Obsidian. Get to know more information about Quartzite and Obsidian origin and discoverer, etymology and class.

History of Quartzite and Obsidian

The history of Quartzite 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.

Quartzite and Obsidian Origin and Discoverer

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

Etymology of Quartzite and Obsidian

Along with Quartzite and Obsidian definition, know more about the etymology of Quartzite and Obsidian. Etymology of Quartzite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Quartzite and Formation of Obsidian. The etymology of Quartzite is From quartz + -ite while that of Obsidian is From quartz + -ite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Quartzite belongs to Metamorphic Rocks while Obsidian belongs to Igneous Rocks. The sub-class, group and other categories of Quartzite and Obsidian are listed below.

For Quartzite,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• Other Categories: Medium grained rock and Opaque rock

For Obsidian,

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