Obsidian and Pyrolite Definition

Definition of Obsidian and Pyrolite

The general Obsidian and Pyrolite definition can be stated as: 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. On the other hand, Pyrolite is an igneous rock consisting of about three parts of peridotite and one part of basalt. Along with definition of Obsidian and Pyrolite, get to know about Properties of Obsidian and Pyrolite. Get to know more information about Obsidian and Pyrolite origin and discoverer, etymology and class.

History of Obsidian and Pyrolite

The history of Obsidian and Pyrolite 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.

Obsidian and Pyrolite Origin and Discoverer

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

Etymology of Obsidian and Pyrolite

Along with Obsidian and Pyrolite definition, know more about the etymology of Obsidian and Pyrolite. Etymology of Obsidian and Pyrolite gives information about origin and formation of a particular rock. Know more about Formation of Obsidian and Formation of Pyrolite. The etymology of Obsidian is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius while that of Pyrolite is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Obsidian and Pyrolite belong to Igneous Rocks. The sub-class, group and other categories of Obsidian and Pyrolite are listed below.

For Obsidian,

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

For Pyrolite,

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