Felsite and Obsidian Definition

Definition of Felsite and Obsidian

The general Felsite and Obsidian definition can be stated as: Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition. 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 Felsite and Obsidian, get to know about Properties of Felsite and Obsidian. Get to know more information about Felsite and Obsidian origin and discoverer, etymology and class.

History of Felsite and Obsidian

The history of Felsite 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.

Felsite and Obsidian Origin and Discoverer

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

Etymology of Felsite and Obsidian

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

For Felsite,

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

For Obsidian,

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