Obsidian and Dunite Definition

Definition of Obsidian and Dunite

The general Obsidian and Dunite 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, Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine. Along with definition of Obsidian and Dunite, get to know about Properties of Obsidian and Dunite. Get to know more information about Obsidian and Dunite origin and discoverer, etymology and class.

History of Obsidian and Dunite

The history of Obsidian and Dunite 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 Dunite Origin and Discoverer

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

Etymology of Obsidian and Dunite

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

For Obsidian,

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

For Dunite,

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