Obsidian and Greenschist Definition

Definition of Obsidian and Greenschist

The general Obsidian and Greenschist 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, Greenschist is a metamorphic rock that is formed under lowest temperatures and pressures and is usually produced by regional metamorphism. Along with definition of Obsidian and Greenschist, get to know about Properties of Obsidian and Greenschist. Get to know more information about Obsidian and Greenschist origin and discoverer, etymology and class.

History of Obsidian and Greenschist

The history of Obsidian and Greenschist 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 Greenschist Origin and Discoverer

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

Etymology of Obsidian and Greenschist

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

For Obsidian,

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

For Greenschist,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Not applicable
• Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock