Variolite and Obsidian Definition

Definition of Variolite and Obsidian

The general Variolite and Obsidian definition can be stated as: Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance. 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 Variolite and Obsidian, get to know about Properties of Variolite and Obsidian. Get to know more information about Variolite and Obsidian origin and discoverer, etymology and class.

History of Variolite and Obsidian

The history of Variolite 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.

Variolite and Obsidian Origin and Discoverer

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

Etymology of Variolite and Obsidian

Along with Variolite and Obsidian definition, know more about the etymology of Variolite and Obsidian. Etymology of Variolite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Variolite and Formation of Obsidian. The etymology of Variolite is From Latin varius, speckled, variegated while that of Obsidian is From Latin varius, speckled, variegated. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Variolite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Variolite and Obsidian are listed below.

For Variolite,

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

For Obsidian,

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