Granulite and Obsidian Definition

Definition of Granulite and Obsidian

The general Granulite and Obsidian definition can be stated as: Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.. 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 Granulite and Obsidian, get to know about Properties of Granulite and Obsidian. Get to know more information about Granulite and Obsidian origin and discoverer, etymology and class.

History of Granulite and Obsidian

The history of Granulite 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.

Granulite and Obsidian Origin and Discoverer

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

Etymology of Granulite and Obsidian

Along with Granulite and Obsidian definition, know more about the etymology of Granulite and Obsidian. Etymology of Granulite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Granulite and Formation of Obsidian. The etymology of Granulite is From Latin granulum, a little grain or fine grained while that of Obsidian is From Latin granulum, a little grain or fine grained. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Granulite belongs to Metamorphic Rocks while Obsidian belongs to Igneous Rocks. The sub-class, group and other categories of Granulite and Obsidian are listed below.

For Granulite,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• 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