Borolanite and Obsidian Definition

Definition of Borolanite and Obsidian

The general Borolanite and Obsidian definition can be stated as: Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix. 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 Borolanite and Obsidian, get to know about Properties of Borolanite and Obsidian. Get to know more information about Borolanite and Obsidian origin and discoverer, etymology and class.

History of Borolanite and Obsidian

The history of Borolanite 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.

Borolanite and Obsidian Origin and Discoverer

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

Etymology of Borolanite and Obsidian

Along with Borolanite and Obsidian definition, know more about the etymology of Borolanite and Obsidian. Etymology of Borolanite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Borolanite and Formation of Obsidian. The etymology of Borolanite is From Alkalic Igneous complex near Loch Borralan in northwest Scotland while that of Obsidian is From Alkalic Igneous complex near Loch Borralan in northwest Scotland. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Borolanite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Borolanite and Obsidian are listed below.

For Borolanite,

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

For Obsidian,

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