Obsidian and Diorite Definition

Definition of Obsidian and Diorite

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

History of Obsidian and Diorite

The history of Obsidian and Diorite 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 Diorite Origin and Discoverer

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

Etymology of Obsidian and Diorite

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

For Obsidian,

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

For Diorite,

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