Obsidian and Shonkinite Definition

Definition of Obsidian and Shonkinite

The general Obsidian and Shonkinite 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, Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents. Along with definition of Obsidian and Shonkinite, get to know about Properties of Obsidian and Shonkinite. Get to know more information about Obsidian and Shonkinite origin and discoverer, etymology and class.

History of Obsidian and Shonkinite

The history of Obsidian and Shonkinite 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 Shonkinite Origin and Discoverer

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

Etymology of Obsidian and Shonkinite

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

For Obsidian,

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

For Shonkinite,

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