Diorite and Obsidian Definition

Definition of Diorite and Obsidian

The general Diorite and Obsidian definition can be stated as: Diorite is a grey to dark-grey intermediate intrusive igneous rock composed principally of plagioclase feldspar,biotite, hornblende, and pyroxene. 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 Diorite and Obsidian, get to know about Properties of Diorite and Obsidian. Get to know more information about Diorite and Obsidian origin and discoverer, etymology and class.

History of Diorite and Obsidian

The history of Diorite 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.

Diorite and Obsidian Origin and Discoverer

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

Etymology of Diorite and Obsidian

Along with Diorite and Obsidian definition, know more about the etymology of Diorite and Obsidian. Etymology of Diorite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Diorite and Formation of Obsidian. The etymology of Diorite is From early 19th century coined in French, formed irregularly from Greek diorizein distinguish while that of Obsidian is From early 19th century coined in French, formed irregularly from Greek diorizein distinguish. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Diorite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Diorite and Obsidian are listed below.

For Diorite,

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

For Obsidian,

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